Approximately 1,000 architectural drawings, circa 1880-1959, with related correspondence, clippings, announcements, specifications, legal documents, and photographs. Major projects represented include Auldbrass Plantation, Yemasee, S.C; the Guggenheim Museum, New York City; Fallingwater (the Edgar J. Kaufmann residence), Bear Run, Pa.; and Wright's own home and studio in Oak Park, Ill. Also, Wright's correspondence relating to exhibits and publication of his work; other professional matters; and correspondence with his son, John Lloyd Wright, 1920s-1950s; manuscript, typescript, and printed versions of articles and addresses by Wright; photographs, programs, invitations, issues of SQUARE-PAPERS, and other materials, circa 1920s-1940s, relating to Taliesin; and miscellaneous invitations, programs, announcements, honors, appreciations, memorials, clippings, and other documents relating to various aspects of Wright's career.

Also, correspondence with Norman Bel Geddes, Monroe Biddle, John M. Blair, Harry T. Carman, Carolyn K. Christenson, Joseph S. Clarke, Jr., Thomas H. Creighton, Paul Cret, C.C. Cunningham, F.G. Fassett, Jr., Loring Dowst, John E. Harbeson, Oliver Hall, Jared C. Ingersoll, Gaylord P. Harnwell, William Fontaine Jones, Joseph Judge, William Lescaze, John D. Morse, William F. Paris, Charles E. Peterson, Ruth C. Roberts, Henry Shapiro, Oscar Stonorov, J.J. Sweeney, James M. Willcox, Owen J. Wister, Frank Lloyd Wright, Bruno Zevi, and others. This relates to proposed development of air rights over New York City's Pennsylvania Railroad Station, 1955; architectural projects in Pennsylvania relating to mental health, 1955; proposed new Independence Mall Building in Philadelphia, 1955; the 1954 Boston Art Festival Architectural Exhibit; sculpture committee on the design of the Ella Butt McManus monument, Connecticut, 1954-1955; the Philadelphia Saving Fund Society, building designed by Howe & Lescaze (with related memoranda, manuscripts of articles and talks, press releases, and architectural analyses), 1930-1939; and the Jefferson National Expansion Memorial, St. Louis (with related printed material, clippings, and photograph)