Frank Lloyd Wright and the Nature of Concrete

Robert McCarter

Crit­i­cal events in archi­tec­tur­al his­to­ry are most often script­ed in styl­is­tic or pure­ly for­mal terms. Yet for archi­tects prac­tic­ing in Amer­i­ca in the lat­ter decades of the 19th cen­tu­ry, anoth­er def­i­n­i­tion of the dis­ci­pline of archi­tec­ture was fore­most in their minds—a def­i­n­i­tion much less con­cerned with fash­ion and form, and much more con­cerned with the tra­di­tion of build­ing and the mak­ing of places. To under­stand the work of Frank Lloyd Wright, I believe we must bet­ter under­stand this tra­di­tion in which he began his life work. The tra­di­tion of build­ing, large­ly lost today in Amer­i­ca, is con­cerned not with what a build­ing looks like, but with how it is built and how this affects what is experienced. 

Hor­a­tio Gree­nough, Amer­i­can tran­scen­den­tal­ist philoso­pher, defined what he first called organ­ic archi­tec­ture” in his influ­en­tial 1852 essay enti­tled Form and Func­tion,” writ­ten 15 years before Wright’s birth. He also issued a chal­lenge that was lat­er tak­en up Sul­li­van and Wright: The mind of our coun­try has nev­er been seri­ous­ly applied to the sub­ject of build­ing… We have been con­tent to receive our notions of archi­tec­ture as we have received the fash­ions of our gar­ments and the forms of our enter­tain­ments, from Europe.”[1] Please note Greenough’s use of terms such as fash­ions,” forms,” and enter­tain­ment” to describe what is not involved in the sub­ject of building.”

Louis Sul­li­van, from whom Wright received his train­ing in archi­tec­ture, keen­ly felt the absence of a style, dis­tinct­ly Amer­i­can,” yet warned against efforts to speed its arrival by graft­ing or trans­plant­i­ng” his­tor­i­cal styles from oth­er cul­tures onto the Amer­i­can con­ti­nent.[2] In this same arti­cle, writ­ten and deliv­ered as a speech in 1885 (two years before Wright first arrived in Chica­go), Sul­li­van char­ac­ter­ized archi­tec­tur­al edu­ca­tion of his day, dom­i­nat­ed by the Ecole des Beaux Arts, as not cul­ti­vat­ing either the com­mon sense of ana­lyt­i­cal think­ing or the indi­vid­ual insight of each stu­dent. Rather, archi­tec­tur­al edu­ca­tion pro­mot­ed the clas­si­cal styles as fash­ion­able form, not as a part of the tra­di­tion of building. 

Sul­li­van char­ac­ter­ized the teach­ing in Amer­i­can archi­tec­ture schools as being depen­dent upon the ver­bal expla­na­tion and com­ment of its expo­nents. A knowl­edge of their vocab­u­lary is often of assis­tance in dis­clos­ing soft­ness and refine­ment in many prim­i­tive expe­di­ents, and reveal­ing beau­ty in bar­ren places. Famil­iar­i­ty with the phrase­ol­o­gy of the applied arts is also use­ful in assist­ing the stu­dent to a com­pre­hen­sion of many things appar­ent­ly incom­pre­hen­si­ble. Metaphor and sim­i­le are ram­pant in this con­nec­tion, a well-cho­sen word often serv­ing to jus­ti­fy an archi­tec­tur­al absur­di­ty.”[3]

I should point out that this scathing crit­i­cism is equal­ly applic­a­ble to much con­tem­po­rary archi­tec­tur­al edu­ca­tion and design; that it is a fright­en­ing­ly accu­rate descrip­tion of recent­ly fash­ion­able forms doc­u­ment­ed and dis­sem­i­nat­ed in the archi­tec­tur­al media; and that it reminds us how, to this day, we Amer­i­cans are still prone to believe that form alone is suf­fi­cient. And for this rea­son, I believe Frank Lloyd Wright’s effort to arrive at an Amer­i­can archi­tec­ture by dif­fer­ent route, one alto­geth­er opposed to the trad­ing in styles, forms and fash­ions, has impor­tant impli­ca­tions for archi­tec­tur­al edu­ca­tion and prac­tice today.

What tra­di­tion, oth­er than this still-dom­i­nant Amer­i­can obses­sion with form alone, did Wright engage in his search for an appro­pri­ate Amer­i­can architecture?—the tra­di­tion of build­ing, for which Gree­nough had first called in 1852. Here it is impor­tant to remem­ber that Wright’s train­ing to be an archi­tect was not the aca­d­e­m­ic train­ing of the Ecole des Beaux Arts, but rather was appren­tice­ship train­ing, large­ly in the office of Adler and Sul­li­van, and quite lit­er­al­ly on the job.” This appren­tice­ship method of becom­ing an archi­tect derived from the medieval guild tra­di­tion of craft train­ing, which until only lit­tle more than 100 years ago was the only way one could become an architect. 

Appren­tice­ship train­ing in the craft of archi­tec­ture, being lit­er­al­ly hands-on,” required learn­ing by mak­ing, and is in many ways the exact oppo­site of the dis­tanced, objec­tive meth­ods of know­ing archi­tec­ture lat­er devel­oped in the Amer­i­can uni­ver­si­ty. Based upon for­mal com­par­isons and uni­ver­sal sys­tems of both sig­ni­fi­ca­tion and con­struc­tion, aca­d­e­m­ic train­ing has in this cen­tu­ry rede­fined the rela­tion between stu­dents and their designs, result­ing in an ever-increas­ing sep­a­ra­tion from the tra­di­tion of practice.

Today I would argue that this tra­di­tion of prac­tice, of learn­ing to be an archi­tect by (as Gree­nough said) seri­ous­ly apply­ing one’s mind to the sub­ject of build­ing,” has for all intents and pur­pos­es ceased to exist in Amer­i­can schools of archi­tec­ture, and that is has there­fore inevitably van­ished from our pro­fes­sion­al prac­tices, which are today made up entire­ly of archi­tec­ture school graduates.

Due to this blind spot on our part, in order to dis­cern the Frank Lloyd Wright whom Otto Graf has called the most tra­di­tion­al archi­tect,”[4] and the man­ner in which Wright’s work exem­pli­fies and extends the tra­di­tion of build­ing into our time, we must look very care­ful­ly at aspects of Wright’s work that have either been ignored alto­geth­er or inter­pret­ed” into the dom­i­nant for­mal and styl­is­tic log­ic that rules the dis­ci­pline of archi­tec­tur­al history.

While the field of archi­tec­tur­al his­to­ry has from its begin­ning (at the same moment as the found­ing of the Ecole des Beaux-Arts) been dom­i­nat­ed by those trained in the for­mal and styl­is­tic mech­a­nisms of art his­to­ry, the prac­tic­ing pro­fes­sion has increas­ing­ly been effect­ed by the writ­ings of those trained as archi­tects in the tra­di­tion of building—among whom I would note Reyn­er Ban­ham, Aldo Van Eyck, Alvar Aal­to, Louis Kahn, Jorn Utzon, Aldo Rossi, Vit­to­rio Gre­got­ti, Alvaro Siza, Col­in St. John Wil­son, David Chip­per­field, and Juhani Pallasmaa. 

Above all I would point to the enor­mous recent influ­ence on prac­ti­tion­ers of the writ­ings of Ken­neth Framp­ton, whose 1995 Stud­ies in Tec­ton­ic Cul­ture con­sti­tutes an entire oth­er” or alter­na­tive, mak­ing-based his­to­ry of archi­tec­ture, one based nei­ther on styl­is­tic def­i­n­i­tions and sym­bol­ic inter­pre­ta­tions, nor on the for­mal con­cerns of the the­o­rist or his­to­ri­an, but instead on the tra­di­tion of build­ing, the poet­ics of con­struc­tion, and the mat­ters of mak­ing with which archi­tec­ture as a méti­er is inex­tri­ca­bly inter­twined in its prac­tice in the life­world.[5]

In 1887, the year Wright arrived in Chica­go at age 20, Sul­li­van gave a pub­lic lec­ture in which he defined—in terms strik­ing­ly sim­i­lar to Frampton’s tec­ton­ic cul­ture” and crit­i­cal regionalism”—what was need­ed for the devel­op­ment of an appro­pri­ate Amer­i­can archi­tec­ture. Accord­ing to Sul­li­van, such an archi­tec­ture would only devel­op on a region­al basis, with vari­a­tions depen­dent not upon styl­is­tic or for­mal pre­con­cep­tions, but rather due to the influ­ence of local cli­mate, topog­ra­phy, avail­able con­struc­tion mate­ri­als and meth­ods of build­ing.[6] Sul­li­van sum­ma­rized this as a well-trained curios­i­ty with regard to what may be done,” and the young Wright took this def­i­n­i­tion as his per­son­al charge.

Through­out his life as an archi­tect, Frank Lloyd Wright attempt­ed to relate the spaces and forms of his designs to the struc­tures and mate­ri­als with which they were made—as he said, he worked in the nature of mate­ri­als.” [7] Wright believed this was essen­tial if his build­ings were to be edi­fy­ing for those who inhab­it­ed them. Aed­i­fi­care, the ancient word for build­ing, means both to edi­fy, to instruct, and to build, to construct—and both under­stood to be under­tak­en with eth­i­cal intention.

Construction test of reinforced concrete “petal” column, Johnson Wax Building, Racine, Wisconsin, 1936, Frank Lloyd Wright, architect. Wright appears at right. Photo copyright FLW Archives.
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Construction test of reinforced concrete “petal” column, Johnson Wax Building, Racine, Wisconsin, 1936, Frank Lloyd Wright, architect. Wright appears at right. Photo copyright FLW Archives.

Wright engaged in a con­stant search for a com­pre­hen­sive order that would encom­pass both com­po­si­tion and con­struc­tion, an order sim­i­lar to the fusion of struc­ture, mate­r­i­al, form and func­tion that he had found in his stud­ies of nature. Wright attempt­ed to devel­op forms from the rhythm inher­ent in each par­tic­u­lar sys­tem of con­struc­tion he employed, so that the con­struc­tion might in turn be inte­grat­ed with and respon­sive to the spa­tial idea—achieving what he termed sim­plic­i­ty:” There is only one way to get that sim­plic­i­ty. And that way is, on prin­ci­ple, by way of con­struc­tion devel­oped as archi­tec­ture.” [8] [ 1 ]

Essen­tial to Wright’s archi­tec­ture was his under­stand­ing that the way a space is made or con­struct­ed is direct­ly relat­ed to the way it is expe­ri­enced. Thus for Wright, con­struc­tion was nev­er sim­ply a means to some end; it was an essen­tial part of the final expe­ri­ence of life that took place with­in, and thus was required to be ful­ly inte­grat­ed in the process of design. 

From the very begin­ning of his career, Wright uti­lized what he called the unit sys­tem” of square-grid plan­ning, a high­ly devel­oped expres­sion of struc­ture” which pro­vid­ed the sym­pa­thet­ic frame for the life going on with­in.” [9] The square grid or unit sys­tem that under­lay all of Wright’s designs oper­at­ed as both an essen­tial com­po­si­tion­al and scal­ing device, and as a mea­sure and orga­ni­za­tion­al method for construction—the for­mal and eco­nom­ic con­trol required to achieve inte­gral order and organ­ic rhythm. 

Ear­ly exam­ples of this would include the wood board and bat­ten hous­es of the Prairie Peri­od, such as the Wal­ter Gerts Cot­tage, White­hall, Michi­gan, of 1902, where the plan is rig­or­ous­ly struc­tured on a 2 foot square con­struc­tion grid, and the ele­va­tions are struc­tured on a 1 foot (board) and 1 inch (bat­ten) hor­i­zon­tal grid. Less obvi­ous is the square struc­tur­al plan grid of bal­loon frame wood studs under­ly­ing the plas­tered facades of the Ward Willits House, High­land Park, Illi­nois, of 1901, where the 3 foot, 3 inch grid is revealed only in the banks of glass win­dow and doors. As with most of Wright’s larg­er hous­es of this peri­od, the Willits House also has hid­den steel beams at the first floor and roof, allow­ing their gen­er­ous flow of spaces.

As Wright put it: All the build­ings I have ever built, large and small, are fab­ri­cat­ed upon a unit system—as the pile of a rug is stitched into the warp. Thus each struc­ture is an ordered fab­ric. Rhythm, con­sis­tent scale of parts, and the econ­o­my of con­struc­tion are great­ly facil­i­tat­ed by this sim­ple expedient—a mechan­i­cal one absorbed in the final result to which it has giv­en more con­sis­tent tex­ture.” [10] While it is typ­i­cal to relate archi­tec­ture first to sculp­ture among the oth­er arts, it is of the utmost impor­tance to note that Wright refers to him­self not as a sculp­tor, but as the weaver.” [11]

Wright engaged geom­e­try for both its poet­ic and prac­ti­cal capac­i­ties. In describ­ing the square geom­e­try under­ly­ing Uni­ty Tem­ple, Wright quot­ed Walt Whitman:

“Chanting the square deific,
out of the One advancing, out of the sides,
Out of the old and the new,
out of the square entirely divine,
Solid, four-sided, all sides needed”[12]

Yet in his inte­grat­ed design process, Wright employed the very same geom­e­try in the most prac­ti­cal man­ner; as David van Zan­ten has not­ed, in the Chica­go School in which Wright had appren­ticed, the fore­most issue was always how one put things togeth­er,” and Wright’s geo­met­ric puri­ty was a means to expe­dite assem­bly, achiev­ing a kind of mechan­i­cal self-gen­er­a­tion in archi­tec­tur­al com­po­si­tion.”[13]

Robie House, Chicago, Illinois, 1908, Frank Lloyd Wright, architect. Photograph by author.
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Robie House, Chicago, Illinois, 1908, Frank Lloyd Wright, architect. Photograph by author.

There­fore, for Wright, the nature of archi­tec­ture was close­ly relat­ed to the nature of its con­struc­tion, and the nature of its mate­ri­als. But we need to take care not to impose our own con­tem­po­rary inter­pre­ta­tions on Wright. Louis Kahn, in so many ways Wright’s best dis­ci­ple, was most def­i­nite­ly not in this case. Kahn called for the expo­sure of struc­ture in build­ings as an eth­i­cal imperative—concealing struc­ture was, for Kahn, absolute­ly wrong. The hid­den steel beams in the extra­or­di­nary roof can­tilevers and brick bal­cony of Wright’s 1909 Robie House would fail Kahn’s test. Yet Wright received and addressed this same crit­i­cism in his own time: Why should you always expose struc­ture? I call it inde­cent expo­sure.” [14] [ 2 ]

Wright’s under­stand­ing of the nature of mate­ri­als” was deter­mined by the task at hand, rather than any ratio­nale aris­ing from out­side the work. For Wright, mate­ri­als and con­struc­tion were to be ordered and detailed to char­ac­ter­ize the spa­tial expe­ri­ence of inhab­i­ta­tion, and the nature of mate­ri­als” was pro­found­ly inflect­ed by the over­all spa­tial and expe­ri­en­tial inten­tion of the design. Like geom­e­try, for Wright, mate­ri­als played their part in a design process that brought the poet­ic (sacred) and the prac­ti­cal (mun­dane) togeth­er with­out con­tra­dic­tion, cre­at­ing a work that oper­at­ed on sev­er­al lev­els simul­ta­ne­ous­ly to enrich the expe­ri­ence in a way that any sin­gle inter­pre­ta­tion alone could not.

Interior of Larkin Building, Buffalo, New York, 1903, Frank Lloyd Wright, architect. Photo copyright FLW Archives.
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Interior of Larkin Building, Buffalo, New York, 1903, Frank Lloyd Wright, architect. Photo copyright FLW Archives.

It is impor­tant to note that Wright most typ­i­cal­ly engaged materials—including concrete—in hybrid sys­tems of con­struc­tion, employ­ing two or more struc­tur­al mate­ri­als in any design. To con­clude the exam­ple of the Robie House, Chica­go, Illi­nois, 1909, I would point out how the steel that frames all the hor­i­zon­tal planes is nev­er exposed; it is revealed through the spa­tial free­dom it allows the inhab­i­tants. Oth­er exam­ples from this peri­od would include the two great hybrid con­struc­tions in Buf­fa­lo, New York, the Larkin Build­ing of 1903, and the Dar­win Mar­tin House of 1904. The Larkin Build­ing has inte­ri­or columns of steel, clad in brick, and exte­ri­or columns of load-bear­ing brick, with cast con­crete floors sup­port­ed on steel beams, clad in cement plas­ter. The Mar­tin House has load-bear­ing brick piers sup­port­ing steel beams, clad in cement plas­ter, and rein­forced con­crete lin­tel-beams, which in turn car­ry rein­forced con­crete floors. [ 3 ]

Yet the struc­tur­al steel that made Wright’s open, flow­ing spaces pos­si­ble was nev­er revealed to the eye—it could only be sensed as a ful­ly inte­grat­ed part of the larg­er expe­ri­ence. And while I have not­ed the dif­fer­ences in inter­pre­ta­tion between Wright and Kahn on the issue of expos­ing struc­ture, I should also point out that these great Prairie Peri­od works of Wright’s are expe­ri­enced as places made of mason­ry and concrete—exactly the mate­ri­als Kahn, at the age of 50, chose to engage exclu­sive­ly in his archi­tec­ture. Kahn’s deci­sion to aban­don light­weight steel, and to employ only heavy con­crete and mason­ry, marked his emer­gence as a great archi­tect, for all of his now-famous build­ings came after this deci­sion as to the nature of materials—a nature dis­cov­ered by Kahn in the ear­ly works of Frank Lloyd Wright, and most telling­ly in Uni­ty Temple.

After this extend­ed pre­am­ble, we now arrive to the top­ic of this essay: Frank Lloyd Wright and the nature of con­crete. Why con­crete? Wright con­sid­ered rein­forced con­crete to be the one tru­ly mod­ern material—“modern” for Wright because con­crete was entire­ly plas­tic,” able to be formed into any con­ceiv­able shape, ful­ly fire­proof and self-sup­port­ing. Rein­forced con­crete was also the con­struc­tion mate­r­i­al with which Wright had both his great­est dif­fi­cul­ties and his great­est suc­cess­es. An exam­i­na­tion of Wright’s efforts to appro­pri­ate­ly employ rein­forced con­crete also illus­trates the tra­di­tion of build­ing as Wright rede­fined it in the 20th century.

Wright’s Uni­ty Tem­ple is often cit­ed as the first exposed con­crete pub­lic build­ing in the US, but tech­ni­cal­ly this is not cor­rect. More than 20 years before, Car­rere and Hast­ings, along with their young on-site project archi­tect Bernard May­beck, built two extra­or­di­nary hotels in Saint Augus­tine, Flori­da for the rail­road tycoon Hen­ry Fla­gler; the Ponce de Leon and Alcazar Hotels of 1885. How­ev­er, Wright’s Uni­ty Tem­ple may right­ly be con­sid­ered the first exposed rein­forced con­crete pub­lic build­ing in the US, for the Flori­da hotels were built of unre­in­forced mass con­crete, the only steel being rail­road ties cast in place over the win­dow openings.

While he has often been reput­ed to be ahead of his time,” in both spa­tial com­po­si­tion and build­ing con­struc­tion, the fact is that Wright was rarely the first” archi­tect to engage any par­tic­u­lar mate­r­i­al or method of con­struc­tion. What makes Wright’s work an impor­tant prece­dent was his aston­ish­ing abil­i­ty to dis­cov­er new spa­tial and expe­ri­en­tial poten­tial­i­ties in every mate­r­i­al he engaged. 

What is appar­ent­ly Wright’s first design to exclu­sive­ly employ rein­forced con­crete was the Mono­lith­ic Con­crete Bank project of 1894, iron­i­cal­ly pub­lished in Brick­builder mag­a­zine. This project, though small, could not be more monumental—its façade was direct­ly relat­ed to Egypt­ian tem­ple fronts, and its piers emerged from the wall in emi­nent­ly plas­tic fash­ion,” as Wright said.[15] Designed one year after Wright left the Sul­li­van office, the whole has a sin­gu­lar­i­ty of space, born of the fusion of form, struc­ture, and mate­r­i­al that is exact­ly the oppo­site of the Chica­go steel frame skyscraper.

Interior of Unity Temple, Oak Park, Illinois, 1906, Frank Lloyd Wright, architect. Photograph by author.
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Interior of Unity Temple, Oak Park, Illinois, 1906, Frank Lloyd Wright, architect. Photograph by author.

In Uni­ty Tem­ple, designed in late 1905 and com­plet­ed con­struc­tion in 1908 in Oak Park, Illi­nois, Wright employed rein­forced con­crete, inside and out, because of the man­ner in which its mono­lith­ic, homoge­nous nature matched the pro­gram of Uni­tar­i­an wor­ship. The unique­ly syn­thet­ic con­cep­tion of unity—the fusion of space, mate­r­i­al and experience—which Wright sought to embody in Uni­ty Tem­ple, required a sim­i­lar fusion in its mate­r­i­al: there was only one mate­r­i­al to choose…concrete.” Rein­forced con­crete would be used through­out, for both ver­ti­cal and hor­i­zon­tal sur­faces and struc­tures, noth­ing else if the build­ing was to be thor­ough­bred, mean­ing built in char­ac­ter out of one mate­r­i­al.”[16] [ 4 ]

Exterior of Unity Temple, Oak Park, Illinois, 1906, Frank Lloyd Wright, architect. Period photograph from 1908, copyright by FLW Archives.
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Exterior of Unity Temple, Oak Park, Illinois, 1906, Frank Lloyd Wright, architect. Period photograph from 1908, copyright by FLW Archives.

Intend­ing a fusion of con­struc­tion and com­po­si­tion, Wright wrote: Why not make the wood­en box­es or forms so that the con­crete could be cast in them as sep­a­rate blocks and mass­es grouped about an inte­ri­or space in some such way as to pre­serve this desired sense of the inte­ri­or space in the appear­ance of the whole build­ing. And the block-mass­es would be left as them­selves with no fac­ing. That would be cheap and per­ma­nent…” Too mon­u­men­tal, all this? It would be nobly sim­ple. The wood­en forms or molds in which the con­crete must at that time be cast were always the chief item of expense, so to repeat the use of a sim­ple form as often as pos­si­ble was nec­es­sary. There­fore a build­ing, all four sides alike, looked like the thing. This, in sim­plest terms, meant a build­ing square in plan. That would make their tem­ple a cube—a noble form.” [17] For Wright, there was no con­tra­dic­tion in not­ing in the same phrase both the poet­ic (“noble” and per­ma­nent”) and prac­ti­cal (reuse of a sin­gle form as often as pos­si­ble” so as to be cheap”) char­ac­ter­is­tics of con­crete as a con­struc­tion mate­r­i­al. [ 5 ]

Wright cast the con­crete in repeat­ing form­work so that the 7 foot mod­ule of the square plan grid would be expressed in the sep­a­rate blocks and mass­es” of the fin­ished build­ing. Peri­od pho­tographs also reveal the fine hor­i­zon­tal tex­ture that the wood­en board forms orig­i­nal­ly imprint­ed on the sur­face of the con­crete, lead­ing some pub­li­ca­tions whose writ­ers did not vis­it the build­ing in per­son, but only saw pho­tographs, to claim that Uni­ty Tem­ple was con­struct­ed of brick. In these ways we see how Uni­ty Tem­ple was both con­ceived and con­struct­ed as a woven fab­ric, fab­ri­cat­ed upon a unit system.” 

Construction photograph, late 1907, Unity Temple, Frank Lloyd Wright, architect. Photo copyright FLW Archives.
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Construction photograph, late 1907, Unity Temple, Frank Lloyd Wright, architect. Photo copyright FLW Archives.

Here we might note, in the con­struc­tion sequence of Uni­ty Tem­ple as doc­u­ment­ed in the peri­od pho­to­graph tak­en in ear­ly 1907, the inter­est­ing pre­mo­ni­tion of Wright’s Guggen­heim Muse­um. Only one set of wood form­work was made for each of the four sides of Uni­ty Tem­ple, with the wall being cast first; the wall forms being moved around to the next side and the col­umn forms being set up on top of the com­plet­ed wall; the col­umn forms being moved around to the next side and the roof forms being set up on top of the com­plet­ed columns; and so on until the cubic vol­ume of Uni­ty Tem­ple had been com­plet­ed. I have described an upward spi­ral­ing sequence of construction—a sequence Wright rein­ter­pret­ed fifty years lat­er in the Guggenheim’s upward spi­ral­ing sequence of move­ment in space. [ 6 ]

Rein­forced concrete’s attrib­ut­es appealed to Wright’s client, the Rev­erend Rod­ney Johon­not, who wrote that the con­crete of Uni­ty Tem­ple was to be poured and stamped in forms, mak­ing a struc­tur­al mono­lith of the whole, thus in anoth­er way, typ­i­fy­ing uni­ty.” [18] Wright’s uncle, the rev­erend Jenkin Lloyd Jones, the lead­ing Uni­tar­i­an in Chica­go, praised Uni­ty Tem­ple as one sol­id mono­lith. It is not only built on a rock but it is a rock-built church.” [19] In this way, con­crete allowed Wright to achieve both the most mod­ern inte­grat­ed con­struc­tion and the most ancient sacred foundation.

Interior of Unity Temple, Frank Lloyd Wright, architect. Photograph by author.
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Interior of Unity Temple, Frank Lloyd Wright, architect. Photograph by author.

Even Wright, per­haps the most gift­ed mak­er of form in mod­ern times, was unable to fore­see com­plete­ly the lib­er­a­tive spa­tial poten­tial of mono­lith­ic rein­forced con­crete con­struc­tion. As can be seen in the dif­fer­ence between the final con­struc­tion draw­ings and the build­ing as real­ized, Wright’s con­cep­tion of the inte­ri­or wood trim details of Uni­ty Tem­ple changed—from fram­ing” edges and cor­ners to fold­ing” across and around them—remarkably late, in fact only occur­ring dur­ing con­struc­tion itself. Today this fold­ing” effect is so impor­tant to our expe­ri­ence of Uni­ty Tem­ple that we can hard­ly imag­ine it was not part of Wright’s orig­i­nal con­cep­tion. Yet this is one of numer­ous exam­ples of Wright con­tin­u­ing to design dur­ing con­struc­tion, in this case seek­ing a way to express the almost lim­it­less poten­tial of rein­forced con­crete to shape space. [ 7 ]

Hav­ing achieved such a per­fect syn­the­sis in Uni­ty Tem­ple, it is inter­est­ing to note that Wright remained crit­i­cal of con­crete as a build­ing mate­r­i­al. While the walls of Uni­ty Tem­ple were cast in repet­i­tive­ly-used wood­en forms, Wright not­ed the inher­ent lack of con­struc­tive order or unit sys­tem” in cast-in-place con­crete, and sought a more direct rev­e­la­tion of the con­struc­tion mod­ule and the rhythm of the (nec­es­sar­i­ly) hid­den steel rein­forc­ing bars—the inter­nal bal­ance between the ten­sile (steel) and the com­pres­sive (con­crete) components. 

Harry Brown House project, 1906, Frank Lloyd Wright, architect. Drawing copyright FLW Archives.
8

Harry Brown House project, 1906, Frank Lloyd Wright, architect. Drawing copyright FLW Archives.

It is hard­ly coin­ci­den­tal that in 1906, the same year that con­struc­tion began on Uni­ty Tem­ple, Wright designed the Har­ry Brown House project, which he would lat­er title the first block house”—the con­crete block sys­tem of con­struc­tion appears here ful­ly artic­u­lat­ed. In 1908, as Uni­ty Tem­ple was being com­plet­ed, Wright wrote: As for the future—the work shall grow more tru­ly sim­ple; more expres­sive with few­er lines, few­er forms; more artic­u­late with less labor; more plas­tic; more flu­ent, although more coher­ent; more organ­ic. It shall grow not only to fit more per­fect­ly the meth­ods and process­es that are called upon to pro­duce it, but shall fur­ther find what­ev­er is love­ly or of good repute in method or process, and ide­al­ize it.”[20] [ 8 ]

Exterior of Midway Gardens, Chicago, Illinois, 1913, Frank Lloyd Wright, architect. Photo copyright FLW Archives.
9

Exterior of Midway Gardens, Chicago, Illinois, 1913, Frank Lloyd Wright, architect. Photo copyright FLW Archives.

Before Wright was able to employ his con­crete block sys­tem, he would return to employ­ing con­crete in hybrid con­struc­tion sys­tems, in such build­ings as the Mid­way Gar­dens, Chica­go, Illi­nois of 1913, which had rein­forced con­crete cast into hol­low brick and con­crete mason­ry piers and walls, rein­forced con­crete floors, and con­cealed steel truss­es span­ning the largest inte­ri­or vol­ume, the Win­ter Gar­den. At the Mid­way Gar­dens we also find Wright’s first exten­sive use of pat­terned pre­cast con­crete mason­ry blocks. The Impe­r­i­al Hotel, Tokyo, Japan, of 1917–21 employed rein­forced con­crete cast into hol­low cut stone and brick walls, with rein­forced con­crete floors and beams. [ 9 ]

Yet Wright yearned to again engage rein­forced con­crete as a mono­lith­ic mate­r­i­al. He employed rein­forced con­crete in the 1910 Uni­ver­sal Port­land Cement Exhib­it struc­ture in New York’s Madi­son Square Gar­den, and pro­posed it for the unbuilt 1912 project for the San Fran­cis­co Call Press building. 

The Barns­dall Hol­ly­hock” House, Olive Hill, Los Ange­les, Cal­i­for­nia, of 1919 was intend­ed by Wright to be built in cast rein­forced con­crete, like Uni­ty Tem­ple. Whether this was ever a real pos­si­bil­i­ty, or sim­ply Wright’s hope, is not clear. In any event, the house was actu­al­ly built using wood studs and stuc­co, wood roof beams, and pre­cast con­crete dec­o­ra­tive ele­ments. Wright’s frus­tra­tion in not being able to build this project in the mate­r­i­al of his choice may be sensed in the cap­tion he placed under a pho­to­graph of one of the wood and stuc­co Barns­dall build­ings on Olive Hill, pub­lished in the July 1928 issue of Archi­tec­tur­al Record, which mis­lead­ing­ly reads Glass and con­crete.”[21]

Interior of Millard House, “La Miniatura,” Los Angeles, California, 1923, Frank Lloyd Wright, architect. Photo by author.
10

Interior of Millard House, “La Miniatura,” Los Angeles, California, 1923, Frank Lloyd Wright, architect. Photo by author.

Upon his return from Japan and the com­ple­tion of the Impe­r­i­al Hotel, Wright built four hous­es in Los Ange­les, each con­struct­ed using his con­crete block sys­tem:” the Mil­lard House, the Stor­er House, the Ennis House, and the Free­man House, all com­plet­ed in 1923. We would take the despised out­cast of the build­ing industry—the con­crete block—out from under­foot or from the gutter—find a hith­er­to unex­pect­ed soul in it—make it live as a thing of beauty—textured like the trees. All we would have to do would be to edu­cate the con­crete block, refine it and knit it togeth­er with steel in the joints and so con­struct the joints that they could be poured full of con­crete after they were set up and steel strand laid in them. The walls would thus become thin but sol­id rein­forced slabs and yield to any desire for form imag­in­able. And com­mon labor could do it all. We would make the walls dou­ble, of course, one wall fac­ing inward and the oth­er fac­ing out­ward, thus get­ting con­tin­u­ous hol­low spaces between, so the house would be cool in sum­mer, warm in win­ter, and dry always.”[22] [ 10 ]

Interior of Storer House, Los Angeles, California, 1923, Frank Lloyd Wright, architect. Photo by author.
11

Interior of Storer House, Los Angeles, California, 1923, Frank Lloyd Wright, architect. Photo by author.

Wright did not men­tion the hor­i­zon­tal struc­ture of floors and roofs in this descrip­tion, for in these first con­crete block hous­es they were con­struct­ed in wood, and thus con­sti­tut­ed hybrid, not mono­lith­ic struc­tures. Yet Wright had achieved his intent to give a unit sys­tem,” a con­struc­tion mod­ule, to rein­forced con­crete, by turn­ing it into an extra­or­di­nar­i­ly flex­i­ble mason­ry unit. I final­ly had found sim­ple mechan­i­cal means to pro­duce a com­plete build­ing that looks the way the machine made it, as much as any fab­ric need look. Tough, light, but not thin; imper­ish­able; plas­tic; no nec­es­sary lie about it any­where and yet machine-made, mechan­i­cal­ly per­fect. Stan­dard­iza­tion as the soul of the machine here for the first time may be seen in the hand of the archi­tect, put square­ly up to imag­i­na­tion, the lim­its of imag­i­na­tion the only lim­its of build­ing.”[23] [ 11 ]

Despite this sec­ond suc­cess, Wright remained crit­i­cal of rein­forced con­crete as a mono­lith­ic build­ing mate­r­i­al, and he touched upon the rea­son in prais­ing the mate­r­i­al, above, not­ing that it will yield to any desire for form imag­in­able.” In 1928, 20 years after the com­ple­tion of Uni­ty Tem­ple, 5 years after com­ple­tion of the Cal­i­for­nia con­crete block hous­es, and dur­ing con­struc­tion of the con­crete block Lloyd Jones House in Tul­sa, Okla­homa, Wright made the fol­low­ing scathing cri­tique of rein­forced concrete: 

Aes­thet­i­cal­ly [con­crete] has nei­ther song nor sto­ry. Nor is it easy to see in this con­glom­er­ate, this mud pie, a high aes­thet­ic prop­er­ty, because, in itself it is an amal­gam, aggre­gate, com­pound. And cement, the bind­ing medi­um, is char­ac­ter­less.” Here in a con­glom­er­ate named con­crete we find a plas­tic mate­r­i­al that as yet has found no medi­um of expres­sion that will allow it to take plas­tic form.” “[Concrete’s] form is a mat­ter of this process of cast­ing rather than a mat­ter of any­thing at all derived from its own nature.”[24]

Wright’s design process, as we have seen, involved the engage­ment of the character—the nature—of the mate­ri­als in the expe­ri­ence of space. Thus Wright’s con­dem­na­tion of rein­forced con­crete as being bereft of char­ac­ter, scale and rhythm—the essen­tial aspects nec­es­sary for archi­tec­tur­al design as he defined it—makes his con­tin­ued efforts to employ con­crete all the more illu­mi­nat­ing. His rea­sons? I should say that in this plas­tic­i­ty of con­crete lies its aes­thet­ic val­ue… And there remain to be devel­oped those high­er values—non-mechanical, plas­tic in method, treat­ment and mass.”[25]

Wright him­self had indi­cat­ed the dan­ger that await­ed him in using rein­forced con­crete in this entire­ly plas­tic” way—without the ben­e­fit of the order­ing sys­tems he had devel­oped in Uni­ty Tem­ple and the con­crete block houses—when he not­ed above that, in using rein­forced con­crete, the lim­its of imag­i­na­tion” are the only lim­its of building.”

Wright exper­i­ment­ed with a vari­ety of geome­tries in his effort to har­ness the unlim­it­ed form-mak­ing poten­tial of rein­forced con­crete as a con­struc­tion mate­r­i­al. In his 1924 design for the Auto­mo­bile Objec­tive” on Sug­ar­loaf Moun­tain, Mary­land, he first employed the spi­ral to house a plan­e­tar­i­um with­in an auto­mo­bile ramp. In 1943, Wright began work­ing on the com­mis­sion for the Guggen­heim Muse­um in New York City. Five years lat­er, in 1948, his V. C. Mor­ris Store was built on Maid­en Lane in San Fran­cis­co, and this spi­ral con­crete ramp con­tained in an urbane brick box is one of his most intrigu­ing designs. While it is clear­ly a pre­cur­sor for the Guggen­heim, at least in its inte­ri­or expe­ri­ence, it is also a hybrid con­struc­tion, with the brick act­ing to scale and mea­sure the con­crete ramp.

Exterior of Guggenheim Museum, New York, New York, 1943-59, Frank Lloyd Wright, architect. Photo copyright FLW Archives.
12

Exterior of Guggenheim Museum, New York, New York, 1943-59, Frank Lloyd Wright, architect. Photo copyright FLW Archives.

Interior of Guggenheim Museum, New York, New York, 1943-59, Frank Lloyd Wright, architect. Photo copyright FLW Archives.
13

Interior of Guggenheim Museum, New York, New York, 1943-59, Frank Lloyd Wright, architect. Photo copyright FLW Archives.

After more than a dozen years of design, Wright’s Guggen­heim Muse­um began con­struc­tion in 1956, and was not com­plet­ed until after his death in 1959. Dur­ing its design, Wright’s strug­gles to find the appro­pri­ate form may be not­ed in a series of designs pro­posed to be built of con­crete, but clad in either red or white mar­ble, with the ramp­ing vol­ume con­tract­ing or expand­ing, octag­o­nal or cir­cu­lar. The final design, a ramp that gen­tly expands as one moves up it, cul­mi­nat­ing in a sky­light, was con­ceived by Wright as a self-sup­port­ing rein­forced con­crete spiral—something like a spring. As built, the Guggen­heim Muse­um employs a series of piers that are clev­er­ly con­cealed on the exte­ri­or and from the ini­tial view upwards upon entry. The ramps of the Guggen­heim were built of rein­forced con­crete, but its walls were not cast in forms, rather con­crete was sprayed onto a met­al lath in the form of the spi­ral­ing exte­ri­or curve. [ 12 ][ 13 ]

Huntington Hartford Resort project, Los Angeles, California, 1947, Frank Lloyd Wright, architect. Drawing copyright FLW Archives.
14

Huntington Hartford Resort project, Los Angeles, California, 1947, Frank Lloyd Wright, architect. Drawing copyright FLW Archives.

A series of projects Wright pro­posed to be built in rein­forced con­crete show a steady dete­ri­o­ra­tion of his own design prin­ci­ples, erod­ed by the lim­it­less form-mak­ing capac­i­ty of con­crete. The enor­mous foun­da­tions of the V. C. Mor­ris House, designed for a cliff-side in San Fran­cis­co, make a mock­ery of the sub­tle­ty of the but­tress­es hid­den in the shad­ow of Fallingwater’s can­tilevers. The series of draw­ings for the Hunt­ing­ton Hart­ford Resort, designed for the arid canyons beyond Hol­ly­wood, are among Wright’s most beau­ti­ful. But the designs, when stud­ied, are shock­ing­ly dis­en­gaged from their nat­ur­al envi­ron­ment. The main club­house, where water from the pools is made to spill into the arid canyon below, is a par­tic­u­lar­ly arro­gant ges­ture, seem­ing to con­sist of a set of fly­ing saucers” only tem­porar­i­ly moored to the mountaintop—a loca­tion hereto­fore always avoid­ed by Wright in pref­er­ence for build­ing into the hill, nev­er on its top. [ 14 ]

Marin County Civic Center, San Rafael, California, 1957, Frank Lloyd Wright, architect. Photograph by author.
15

Marin County Civic Center, San Rafael, California, 1957, Frank Lloyd Wright, architect. Photograph by author.

The Arthur Miller House project of 1957, the Greek Ortho­dox Church in Wauwatosa of 1957, the Grady Audi­to­ri­um at the Uni­ver­si­ty of Ari­zona of 1957, and the Ellis Island pro­pos­al of 1959 all exhib­it Wright’s unfet­tered imag­i­na­tion char­ac­ter­is­tic of his lat­er work in rein­forced con­crete. Per­haps the most dis­ap­point­ing design of this peri­od in Wright’s career is the Marin Coun­ty Civic Cen­ter of 1957. Begun with one of Wright’s great­est site designs—to build the civic cen­ter as a bridge between the hill-tops, recall­ing the ancient Roman aqueducts—Wright inex­plic­a­bly dec­o­rat­ed, rather than con­struct­ed, the building’s exte­ri­or, employ­ing false arch­es that ren­der the built work a par­o­dy of his own bril­liant ini­tial con­cept. [ 15 ]

The con­clu­sion I will draw from all this might best be titled, lim­its and the imag­i­na­tion.” The almost total lack of spa­tial order, human scale, and for­mal con­trol, which char­ac­ter­izes Wright’s late pub­lic build­ings and more extrav­a­gant pri­vate com­mis­sions, is unques­tion­ably relat­ed to the unlim­it­ed for­mal capac­i­ty and lack of mod­u­lar order of the rein­forced con­crete used in their construction—characteristics he him­self had iden­ti­fied as ear­ly as 1928. In many of these cas­es, Wright seemed unwill­ing or unable to impose his own lim­i­ta­tions upon either his imag­i­na­tion or this inher­ent­ly order-less method of construction.

Hoult Usonian House project, 1936, Frank Lloyd Wright, architect. Drawing copyright FLW Archives.
16

Hoult Usonian House project, 1936, Frank Lloyd Wright, architect. Drawing copyright FLW Archives.

Interior, Jacobs House, Madison, Wisconsin, 1936, Frank Lloyd Wright, architect. Photo by author.
17

Interior, Jacobs House, Madison, Wisconsin, 1936, Frank Lloyd Wright, architect. Photo by author.

Mean­while, the bal­ance of inven­tion, order and scale main­tained by Wright’s Uson­ian Hous­es designed in the same peri­od must be relat­ed to the mod­u­lar order char­ac­ter­is­tic of their major mate­ri­als: con­crete block, brick, and wood. Only when he com­bined rein­forced con­crete with mod­u­lar materials—or turned rein­forced con­crete into a mod­u­lar material—was Wright able to attain the same bal­ance in his larg­er build­ings that he con­tin­u­al­ly achieved in the Uson­ian Hous­es. [ 16 ][ 17 ]

The Nation­al Insur­ance Com­pa­ny, designed for a site on Michi­gan Avenue in 1923—the same year as the Cal­i­for­nia con­crete block hous­es were in construction—is per­haps the first true cur­tain wall” high-rise, with rein­forced con­crete columns and floors can­tilever­ing out from a cen­tral core to car­ry a cop­per and glass skin. This design was the basis for all of Wright’s lat­er high-rise designs, includ­ing St. Marks in New York of 1929, the John­son Wax Research Tow­er in Racine of 1944, and the Price Tow­er in Bartlesville, Okla­homa of 1952.

Exterior of “Fallingwater,” Kaufmann House, Mill Run, Pennsylvania, 1935, Frank Lloyd Wright, architect. Photograph by author.
18

Exterior of “Fallingwater,” Kaufmann House, Mill Run, Pennsylvania, 1935, Frank Lloyd Wright, architect. Photograph by author.

A par­tic­u­lar­ly ele­gant and effec­tive use of rein­forced con­crete in a hybrid con­struc­tion is the great Falling­wa­ter, Edgar Kaufmann’s house in Bear Run, Penn­syl­va­nia, designed in 1935 when Wright was age 68. The dia­logue between the ver­ti­cal rock walls and hor­i­zon­tal con­crete slabs of the house, echo­ing that between the rocks and water of the falls, makes the whole expe­ri­ence of inhab­i­ta­tion per­haps the most pow­er­ful of mod­ern times. [ 18 ]

Interior of Taliesin West, Scottsdale, Arizona, 1937, Frank Lloyd Wright, architect. Photograph copyright FLW Archives.
19

Interior of Taliesin West, Scottsdale, Arizona, 1937, Frank Lloyd Wright, architect. Photograph copyright FLW Archives.

At Tal­iesin West, begun by Wright out­side Scotts­dale, Ari­zona in 1937, Wright devel­ops a com­plete­ly dif­fer­ent way of using con­crete to engage the nat­ur­al site. Deriv­ing from a 1928 project for a small house Wright designed for him­self in the Mojave Desert, Tal­iesin West is con­struct­ed mas­sive desert stone” walls, with boul­ders from the site were stacked in forms and cast in unre­in­forced con­crete. These sup­port the wood­en framed fold­ed roofs, clad in can­vas that could orig­i­nal­ly be opened using sail­ing cords and pul­leys, to be changed as a part of the annu­al migra­tion from north to south of the Fel­low­ship. [ 19 ]

Wright’s 1938 Anne Pfeif­fer Chapel, part of Flori­da South­ern Col­lege, employs con­crete blocks at the base, where pedes­tri­ans orig­i­nal­ly engaged their del­i­cate­ly scaled pat­terns in the shad­ow of the cit­rus trees, while the smooth, ren­dered con­crete walls rose above the trees to cap­ture the sun­light and announce the cam­pus with­in the grove. The chapel’s two forms of rein­forced con­crete make the build­ing some­thing we might call a mono­lith­ic hybrid. 

The Beth Sholom Syn­a­gogue, built in Elkins Park, Penn­syl­va­nia in 1954, devel­ops a sim­i­lar dia­logue between base and top, but is expe­ri­enced as a place made between the rein­forced con­crete base, set into the ground and con­tain­ing the seat­ing, and the plas­tic, glass and met­al roof struc­ture ris­ing like a great tent above the congregation.

Interior of Johnson Wax Building, Racine, Wisconsin, 1936, Frank Lloyd Wright, architect. Photograph by author.
20

Interior of Johnson Wax Building, Racine, Wisconsin, 1936, Frank Lloyd Wright, architect. Photograph by author.

Final­ly, in addi­tion to the use of brick and glass tub­ing mason­ry,” the excel­lence of the John­son Wax Build­ing, Racine, Wis­con­sin, of 1936, orig­i­nates in the fact that its rein­forced con­crete columns are them­selves cast as mod­u­lar repet­i­tive ele­ments, rather than as part of a mono­lith­ic mass. This build­ing, which Ken­neth Framp­ton has right­ly called the great­est work of Amer­i­can art of the 20th cen­tu­ry,[26] epit­o­mizes Wright’s best work in rein­forced concrete—work where con­crete is engaged in a dia­logue with oth­er, mod­u­lar mate­ri­als, and where con­crete itself becomes mod­u­lar. [ 20 ]

In con­clu­sion, we rec­og­nize the crit­i­cal impor­tance of lim­i­ta­tions in Wright’s work: the Uson­ian Hous­es’ inher­ent eco­nom­ic, mate­r­i­al and spa­tial lim­its are the rea­son they remain more true to Wright’s own prin­ci­ples than did his larg­er lat­er com­mis­sions. When mono­lith­ic rein­forced con­crete was employed, only Wright’s self-imposed lim­i­ta­tions could insure that his own fun­da­men­tal prin­ci­ples would be hon­ored. In 1937, while Falling­wa­ter and the John­son Wax Build­ing were in con­struc­tion, Wright spoke of the pos­i­tive pow­er of econ­o­my, the beau­ty of the min­i­mal, the need for lim­its, and their rela­tion to the imag­i­na­tion: The human race built most nobly when lim­i­ta­tions were great­est and, there­fore, when most was required of imag­i­na­tion in order to build at all. Lim­i­ta­tions seem to have always been the best friends of archi­tec­ture.”[27]

  1. 1

    Hor­a­tio Gree­nough, Form and Func­tion” (1852), reprint­ed in Roots of Con­tem­po­rary Archi­tec­ture, ed. Lewis Mum­ford (New York: Dover, 1972), p.33.

  2. 2

    Louis Sul­li­van, Char­ac­ter­is­tics and Ten­den­cies of Amer­i­can Archi­tec­ture” (1885) reprint­ed in Kinder­garten Chats and Oth­er Writ­ings (New York: Dover, 1979), p.177.

  3. 3

    Ibid., p179.

  4. 4

    Otto Graf, The Art of the Square,” Frank Lloyd Wright: A Primer on Archi­tec­tur­al Prin­ci­ples, ed. Robert McCarter (New York: Prince­ton Archi­tec­tur­al Press, 1989), p.219.

  5. 5

    Ken­neth Framp­ton, Stud­ies in Tec­ton­ic Cul­ture (Cam­bridge, MA: MIT Press, 1995).

  6. 6

    Louis Sul­li­van, What is Just Sub­or­di­na­tion, in Archi­tec­tur­al Detail, of Details to Mass?” reprint­ed in Kinder­garten Chats, op. cit., p.182.

  7. 7

    Hen­ry Rus­sell Hitch­cock, In the Nature of Mate­ri­als (New York: Hawthorn, 1942). Title giv­en by Wright, who pro­vid­ed mate­ri­als and guid­ance to Hitch­cock in this first autho­rized” monograph.

  8. 8

    Frank Lloyd Wright, The Prince­ton Lec­tures” (1930), The Future of Archi­tec­ture (New York: Hori­zon, 1963), p.162.

  9. 9

    Frank Lloyd Wright, (1929), Writ­ings and Build­ings, ed. E. Kauf­mann and B. Rae­burn (New York: New Amer­i­can Library, 1960), p.101.

  10. 10

    Frank Lloyd Wright, The Life-Work of Amer­i­can Archi­tect Frank Lloyd Wright” Wendi­gen (1925; reprint, New York: Hori­zon, 1965), p.57.

  11. 11

    Frank Lloyd Wright, An Auto­bi­og­ra­phy (New York: Hori­zon, 1932), p.270.

  12. 12

    Walt Whit­man, Leaves of Grass (1892; reprint, New York: Library of Amer­i­ca, 1982), p.559.

  13. 13

    David van Zan­ten, School­ing the Prairie School,” The Nature of Frank Lloyd Wright, ed. Bolon, et. al., (Chica­go: Chica­go Uni­ver­si­ty Press, 1988), p. 71.

  14. 14

    Frank Lloyd Wright, An Amer­i­can Archi­tec­ture (New York: Hori­zon, 1955), p.84.

  15. 15

    Frank Lloyd Wright, The Vil­lage Bank Series,” Frank Lloyd Wright, Col­lect­ed Writ­ings, 1894–1930, ed., B. B. Pfeif­fer (New York: Riz­zoli, 1992), p.72.

  16. 16

    Wright, An Auto­bi­og­ra­phy, op. cit., p. 212–213.

  17. 17

    Ibid.

  18. 18

    Rod­ney Johon­not, Oak Leaves (Oak Park: Uni­tar­i­an Church, 24 Feb­ru­ary 1906), p.3.

  19. 19

    Jenkin Lloyd Jones, Uni­ty LXIV (Chica­go: Uni­tar­i­an Church, 30 Sep­tem­ber 1909), p.484.

  20. 20

    Frank Lloyd Wright, In the Cause of Archi­tec­ture” (1908, The Archi­tec­tur­al Record), reprint­ed In the Cause of Archi­tec­ture (New York: Archi­tec­tur­al Record Books, 1975), p.63.

  21. 21

    Ibid., p.201.

  22. 22

    Wright, An Auto­bi­og­ra­phy, op. cit., p.265.

  23. 23

    Wright, Writ­ings and Build­ings, op. cit., p.225.

  24. 24

    Wright, In the Cause of Archi­tec­ture, op. cit., p.205–208.

  25. 25

    Ibid., p.209–210.

  26. 26

    Ken­neth Framp­ton, The John­son Wax Build­ings and the Angel of His­to­ry,” intro­duc­tion to Frank Lloyd Wright and the John­son Wax Build­ings, Jonathan Lip­man (New York” Riz­zoli, 1986), p.xii.

  27. 27

    Wright, The Future of Archi­tec­ture, op. cit., p.62.