Charles Adam Platt (1861-1933) was an American architect and landscape designer. Although best remembered today for his landscape and country house designs, he was also nationally known for his etchings, landscape paintings, commercial architecture, and institutional projects. He was largely self-taught in each of these disciplines, building his success on his ability to reconceive the classical tradition in architecture for the needs and desires of his wealthy, powerful clients. This collection contains materials related to Platt's personal and professional lives, the bulk originating from Platt's office in the form of project drawings, photographs, and records documenting architectural projects from 1901-1933.

This collections includes architectural drawings, files and photographs of projects designed by Woodbridge and his various firms, circa 1928-1960s. These include buildings at Presbyterian Church, Savoonga, St. Lawrence Island, Ala.; Cole Memorial Chapel, Wheaton College, Wheaton, IL; Amherst College, Mass.; Smith College, Mass.; St. Mary the Virgin Church, Chappaqua, N.Y.; St. John's Chapel and Library, Hobart College, Geneva, N.Y.; the Keene Valley Congregational Church, Keene Valley, N.Y.; and the Brick Presbyterian Church and the Episcopal Church Center, both in New York City; as well as other churches, residences, and miscellaneous projects. Also, included are drawings done by Woodbridge while a student at the Columbia School of Architecture, early 1920s; photographs of some of Woodbridge's buildings taken mostly by the architectural photographer Samuel H. Gottscho; a small sample of Woodbridge's correspondence, 1941-1942, documenting his role as chairman of the American Institute of Architects Committee on Architectural Services, relating to the role architects could play in the war effort; sketchbooks of various international locations; and photographs and documents relating to archaeological excavations at Antioch in Pisidia, Turkey.

This small collection contains primarily correspondence, itineraries, and papers related to Fitch's publications, travel, and the administration of Columbia University's Historic Preservation program. There are copies and drafts of several articles and reports generated for various organizations authored by Fitch and others (all reports are noted in italics in the spreadsheet). Also included is the unfinished manuscript of Fitch's final book project on American architecture. Of particular note among the reference materials are fifty-two photographs of Richard Neutra's VDL Research House in Los Angeles, some taken by architectural photographer Julius Shulman.

Papers consist primarily of Smith's files relating to his architectural work containing correspondence with clients, colleagues, contractors, suppliers, and others, with related bills, notes, receipts, accounts, estimates, specifications, time sheets, progress reports, and architectural drawings. Also, portrait photographs of young people (possibly classmates?) in Rochester, N.Y. and Evanston, Ill., circa late 19th century; a class roll card, 1901, for a class taught by Smith at the General Society of Mechanics and Tradesmen, New York; a memo book, undated, containing miscellaneous accounts, sketches, memoranda; correspondence, 1890s, between Ella Smith (Smith's mother) and Lucien Smith and other family members, Rochester, N.Y., and Elmhurst, Ill.; account book, 1891-1902, of Mrs. H. V. (Ella) Smith, Rochester, N.Y.; calling cards, invitations, photographs, letters, bills, receipts, and other, miscellaneous personal documents; student drawings made by Smith when at Columbia University's School of Architecture; drawings for a proposed "academy of art and archaeology" in Rome, 1905-1906; and drawings for Malvina Hoffman's house and studio in New York City.