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 collection primarily contains architectural renderings executed by Long in 1906 for a memorial issue of BUILDINGS magazine dedicated to New York architect Stanford White. These drawings represent White's most famous structures designed while he was a partner with McKim, Mead & White. Buildings depicted include Madison Square Garden, the New York Herald Building, and the Washington Memorial Arch, all in New York City, among others. Also included in this collection are miscellaneous architectural drawings by Long, Chester B. Price, and others, circa 1920s-1930s; and printed material.

Shelved with this collection is the Peter Gilsey Collection of Theatrical Tokens and Medalets

Architectural drawings and photographs of architectural drawings with some related correspondence of residential and public buildings, churches, libraries, theaters, monuments, and bridges including: the Henry Hudson Bridge, Triborough Bridge, and the Manhattan Bridge in New York; Edward Henry Harriman's Arden House in Harriman, N.Y.; the Alfred I. Dupont mansion in Roslyn, N.Y.; the David A. Reed house in Washington, D.C.; the reconstruction of the Grand Army Plaza in New York City; the Memorial Amphitheater for Arlington National Cemetery; and various bicentennial buildings for Yale University. Of note are drawings of the grounds, details of buildings, and furniture for the New York Public Library, 1908-1909.

This collection includes administrative, legal, and financial records, correspondence, specifications, black and white photographs, and reprographic architectural and engineering drawings related to the operations of the City Construction Company in New York City between circa 1945 and 1955. Projects include primarily apartment buildings, theatres, and commercial buildings in Manhattan and Brooklyn. Because the company was working for architects, and often working on extant buildings, drawings from numerous architects are also included in this collection. Major projects include the 15 E. 91st St. Apartments; 25 Broad St. Building; 30 Broad St. Building; 1211 Madison Ave. Apartments; 1211 Madison Ave. Apartments; and the Parke-Bernet Gallery, all in Manhattan.

This collection consists of ten volumes of business records connected with the operation of Daly's Theatre between 1872 and 1899. Included are cash account books recording income and expenditures, rosters of personnel, attendance books for members of the company, salary accounts, receipt books, and one volume having to do with directions for the settings for various plays.

Architectural drawings and photographs of Hoppin and Koen designs including alterations to the residence of R.T. Wilson, Jr., 15 East 57th Street, New York, 1905; Albany County Courthouse, Albany, New York, 1913-1915; Mount Morris Theater at Fifth Avenue and 116th Street, New York, 1911-1912; New York City Fire Department building, East 111th Street and Second Avenue, 1911; Manhattan terminal of the Brooklyn Bridge, undated, not constructed; residences of George B. McClellan at Princeton, New Jersey, and Washington, D.C., 1922; Edith Wharton and Edward Wharton's Lenox, Massachusetts, home, the Mount; New York City Police Headquarters, 240 Centre St., New York; and others.

Files of the company, 1911-1920, much of which consists of unsucessful architectural bid documents, each noting the architect, building, and location, as well as estimated costs, sketches, and related correspondents. These bid documents represent commissions not awarded to NYATCC, and do, in some cases, indicate the outcome of the bid. Architects represented include McKim, Mead & White; Cass Gilbert; George Post; D.H. Burnham & Company; Warren & Wetmore, Schwartz & Gross, and many others. Also includes correspondence and office memoranda, including some describing the formative years, 1911-1914, of the National Terra Cotta Society, trade catalogs, and job photographs. Also, two albums containing photographs of sample pieces of terra cotta, and month by month construction records for three buildings, including the American Theater (42nd Street, New York, 1892) by Charles Coolidge Haight; the Renaissance Apartments (Brooklyn, N.Y., 1889) and the Imperial Apartments (Brooklyn, N.Y., 1890) both by Montrose Morris.

This collection includes original and reprographic architectural drawings, black and white photographic prints, typescript specifications, and other papers relating to the architectural practice of Thomas W. Lamb, as well as his colleague and successor, John J. McNamara.

The Wallace K. Harrison architectural drawings and papers consists of architectural drawings, photographs, correspondence, notes, speeches, manuscripts, press releases, clippings, memoranda, printed material, job lists, curriculam vitae, contracts, articles, and other material related to Harrison's architectural projects. The collection also contains a significant amount of material regarding Harrison's position as director of the Office of Inter-American Affairs, director of planning of the United Nations Headquarters and biographical material. Approximately a third of the collection is made up of photographs. Photographers include Wendy Barrows, Shirley Burden, George Cserna, Y[uzo] Nagata, and Ezra Stoller, among many others. There is also a collection of 148 art books that belonged to Harrison referred to as his "doodle books." A list of these books with brief descriptions of where Harrison drew in them is contained in the finding aid. Projects documented include Lincoln Center, Metropolitan Opera House, Rockefeller Center, Albany Mall (Empire State Plaza), United Nations, X City, ALCOA building, Corning Glass building, First Presbyterian Church, La Guardia Airport, Socony-Mobil building, Battery Park City, Radio City Music Hall, New York World's Fair (1939 and 1964), Institute for Advanced Study, National Academy of Science, Pahlavi National Library Competition, Oberlin College's Hall Auditorium, Pershing Memorial, Rockefeller University, Hopkins Center, The Anchorage, Avila Hotel, and numerous other buildings and residences.