Alexander McMillan Welch (1869-1943) was a New York City based architect who practiced independently and as a member of Welch, Smith & Provot. His firm was best known for designing New York City townhouses in the Beaux-Arts style. The collection includes 1,641 architectural drawings, 196 student drawings, 14 student notebooks, 99 loose photographs and 3 photo albums of project photography, project specifications and files, and some professional ephemera.

Architectural plans and renderings of Welch's designs, largely New York City residences, circa 1890s-1920s; specifications; photographs; and brochures advertising buildings at 787 Fifth Ave., 628 Fifth Ave., and 71 and 73 Murray Street, in New York City. Drawings and a sketchbook done by Welch while a student; fourteen notebooks containing Welch's notes from Columbia classes in architecture, 1888-1890; licenses to practice in New York and New Jersey, 1904-1923; a certificate, 1937, and related correspondence relating to Welch's appointment as a U.S. delegate to the fourteenth International Congress of Architects, held in Paris, July 18-25, 1937. A list of U.S. delegates is included. Of note are drawings and papers for the restoration of the Dyckman House, an 18th century farmhouse in upper Manhattan (1910-1917); and the Mrs. Rutherford Stuyvesant Estate in Allamuchy, New Jersey, and the Rutherford Stuyvesant Momument in Tranquility Cemetery, Tranquility, New Jersey, designed by sculptor Daniel Chester French.

Three sketchbooks; the first, 1893-1894, containing sketches from his student years at the Columbia School of Mines, Department of Architecture (he received his degree in 1894); the second, 1894-1896, containing sketches made as a student at the Ecole des Beaux-Arts in Paris; and the third, circa 1896-circa 1905, containing sketches for a variety of projects and designs. Buildings and other structures depicted include the Academy of Music on 14th Street, New York City (a seating plan); Wells Fargo Bank Building, Portland, Oregon, 1910; Reunion Hall, Princeton University, 1902; lantern for the Aetna Building, Hartford, Connecticut; Woodland Street entrance to Kinney Park, Hartford, Connecticut, 1905 (some drawings are by others). Program notes from the classes of Paul Blondel and J. Gaudet at the Ecole des Beaux Arts are included. Also, designs (some done in partnership with Joseph Urban) for proposals for the Metropolitan Opera Company on various sites in New York City, circa 1920s; and designs for shopping and music centers in New York City, to 1936.

This small collection contains primarily Detwiller's student drawings, notes, course materials, books, class photographs, and graduation announcements from the period of his study at Columbia University from 1881 to 1885. These materials are supplemented by a small group of Detwiller's childhood sketchbooks, drawings and office papers created by Detwiller during his practice as a professional architect, and other scrapbooks and ephemeral items relating to Detwiller's family and personal interests, spanning the years 1874 to 1940.

Additional materials include carbons of typescript correspondence of lectures given by Dean William A. Boring (academic year 1933-1934) and Professor Theodor Karl Rohdenburg (academic year 1946-1947). Also design problems, the earliest of which were given in conjunction with the Beaux-Arts Institute of Design, from academic years 1918-1919, 1926-1927, 1936-1937, 1949-1950, and 1957-1958. Also materials for the Architecture 51 class; correspondence of Joseph Hudnut; course outlines; correspondence relating to the search for a new dean of the school, 1957-1963.

This collection consists of administrative papers related to the Centennial Celebration organiziational efforts. The collection is made up of 7 series: Departmental Files, The Making of an Architect, Exhibit, Mapping Project, Interviews, Photos, and Bulletins, Brochures, and Books.

This collection consists of 257 video recordings (from 484 dvds) capturing various GSAPP events conducted from 2005 to 2010. These events encompass lectures, debates, conferences, and symposia and feature practicing architects, architectural historians and theorists, preservationists, and other influential figures within the architectural field. Currently, we are in the process of digitizing these video recordings, and they will be accessible online to Columbia affiliates upon completion [anticipated summer 2024]. Additionally, these recordings will be made available to the public in our reading room. They have been organized chronologically, with undated recordings appearing at the end of the collection.

This collection contains posters and publicity materials created by the communications office of Columbia's Graduate School of Architecture, Planning, and Preservation (GSAPP). The bulk of the collection is in Series I, which contains posters for GSAPP exhibitions and events such as lectures, discussion panels, end of year shows and film screenings. These have been arranged by decade. Series II contains copies of Newsline, a GSAPP newsletter publication from the 1990s. Series III contains publicity materials for the school's various academic programs.

This collection contains audio recordings for 186 different lectures, which have been digitized and are available online to Columbia affilates (and available to our public in our reading room). While the majority of the recordings are from the GSAPP Wednesday Night Lecture series, there are some recordings from other GSAPP sponosored symposiums, panels, and talks. The recordings are arranged in chronological order, with undated recording listed last. No paper records for this lecture series are included in this collection.

Included are drawings--from preliminary sketches to finished renderings--done by students in the architecture program at the School of Mines at Columbia and, later, at the School of Architecture at Columbia. The bulk of these were done circa 1884-1912, during the tenures of Deans William Robert Ware (1881-1903) and A.D.F. Hamlin (1903-1912). Included in collection are student drawings by William A. Boring, Harry Allan Jacobs, Benjamin Wistar Morris, Jr., Julian Clarence Levi, Arthur Ware, Talbot Faulkner Hamlin, Leopold F. Arnaud, Perry Coke Smith, Theodor Karl Rohdenburg, and Aladar Olgyay. Also, drawings done by architecture students at the Massachusetts Institute of Technology, circa 1880s; a photograph, undated, of William Robert Ware; and one drawing, 1879, by architect Cass Gilbert.