The papers of architectural historian, author, critic, teacher, and museum director, Henry-Russell Hitchcock, date from 1919-1987 and measure 24.8 linear feet. Almost all of the collection is comprised of Hitchcock's correspondence files relating to academic research, teaching, curatorial interests, and professional associations. Letters are from prominent architectural historians, architects, artists, preservationists, museum directors and curators, and family and friends. Also found are two feet of writings by Hitchcock and others, scattered biographical information, printed material, and photographs of Hitchcock and architecture.

The Technical Reference Files comprise an artificial collection that currently contains 1,900 cubic feet of aviation and space related materials, organized in 22 subject series. File materials include photographs, press releases, clippings, correspondence, reports, and brochures, on individuals, organizations, events, and objects.

This collection contains the professional papers of William Curtis Sturtevant and documents his activities as Curator of North American Ethnology at the National Museum of Natural History, his work as the editor-in-chief of the Handbook of North American Indians, his research among the Seminole and Iroquois people, and other professional activities. The collection is comprised of books, sound recordings, research and field notes, realia, artifacts, clippings, microfilm, negatives, slides, photographs, manuscripts, correspondence, memorandums, card files, exhibition catalogs, articles, and bibliographies.

The collection documents in photographs, scrapbooks, notebooks, correspondence, stock ledgers, annual reports, and financial records, the evolution of the telegraph, the development of the Western Union Telegraph Company, and the beginning of the communications revolution. The collection materials describe both the history of the company and of the telegraph industry in general, particularly its importance to the development of the technology in the nineteenth and twentieth centuries. The collection is useful for researchers interested in the development of technology, economic history, and the impact of technology on American social and cultural life.

This collection contains over 37,000 35mm slides, 3,000 glass lantern slides and garden files that may include descriptive information, photocopied articles (from journals, newspapers, or books), planting lists, correspondence, brochures, landscape plans and drawings. Garden files were compiled by Garden Club of America (GCA) members for most of the gardens included in the collection. Some gardens have been photographed over the course of several decades; others only have images from a single point in time. In addition to images of American gardens, there are glass lantern slides of the New York Flower Show (1941-1951) and trips that GCA members took to other countries, including Mexico (1937), Italy, Spain, Japan (1935), France (1936), England (1929), and Scotland. A number of the slides are copies of historic images from outside repositories including horticultural and historical societies or from horticultural books and publications. The GCA made a concerted effort in the mid-1980s to acquire these images in order to increase its documentation of American garden history. Because of copyright considerations, use of these particular images may be restricted.

This collection, which dates from 1926-1986, documents the output of Moses Asch through the various record labels he founded and co-founded, and includes some of his personal papers. The Asch collection includes published recordings, master tapes, outtakes, business records, correspondence, photographs, and film.

The collection dates from 1900 to 1997 and mostly includes images taken in South Africa. The images document the peoples of South Africa, particularly the Loved, Ndebele, San, Sotho, Xhosa, and Zulu peoples. Locations photographed include Basutoland (now Lesotho), Bechuanaland (now Botswana), Johannesburg, Natal, Pretoria, Soweto, Swaziland, Transkei, Transvaal, the Umzimkulu Valley and Zululand. Manuscript and office files include clippings, correspondence, exhibition announcements, invitations and reviews, notes, essays, receipts, and other materials that document Larrabee's career, family history, and personal life.