The Leo Castelli Gallery records measure 215.9 linear feet and 0.001 GB and date from circa 1880-2000, with the bulk of the materials dating from the gallery's founding in 1957 through Leo Castelli's death in 1999. The major influence of dealer Leo Castelli and his gallery on the development of mid-to-late twentieth century modern art in America is well-documented through business and scattered personal correspondence, administrative files, exhibition files, extensive artists' files and printed materials, posters, awards and recognitions, photographs, and sound and video recordings. Also included are records for the subsidiary firms of Castelli Graphics and Castelli/Sonnabend Tapes and Films.

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 is comprised of photographic and manuscript materials, primarily created by Eliot Elisofon to document his travels and work. The images portray many aspects of African life and culture including agriculture, wildlife, archaeology, architecture, art and artisans, children, cityscapes and landscapes, leaders, markets, medicine, recreation, ritual and celebration, and transportation. The manuscript materials include correspondence, essays, clippings, puobligations, notes, research, and itineraries.

The Allen Tupper True and True family papers date from 1841 to 1987 and measure 8.2 linear feet. The collection presents a good overview of True's personal life and and his career as mural painter and illustrator specializing in Western themes.

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.

The Myron Bement Smith collection consists of two parts, the papers of Myron Bement Smith and his wife Katharine and the Islamic Archives. It contains substantial material about his field research in Italy in the 1920s and his years working on Islamic architecture in Iran in the 1930s. Letters describe the milieu in which he operated in Rochester NY and New York City in the 1920s and early 1930s; the Smiths' life in Iran from 1933 to 1937; and the extensive network of academic and social contacts that Myron and Katharine developed and maintained over his lifetime. The Islamic Archives was a project to which Smith devoted most of his professional life. It includes both original materials, such as his photographs and notes, and items acquired by him from other scholars or experts on Islamic art and architecture. Smith intended the Archives to serve as a resource for scholars interested in the architecture and art of the entire Islamic world although he also included some materials about non-Islamic architecture.

The collection includes approximately 250,000 photonegatives, photoprints, color transparencies from the photographic business founded by Addison Scurlock in Washington, DC. Collection also includes business records and ephemera.

This collection includes postcards from 45 African countries. Subjects include agriculture; animals; artists; body arts; cityscapes; cultural landscapes; dance; education; expeditions; flora; industry; leaders; marketplaces; medicine; military; missionaries; music; portraits; recreation; rites and ceremonies; and transportation, among many other topics.

Collection includes historic photographs, slides and films on subjects relating to all aspects of the petroleum industry, including exploration, drilling, refineries, tankers, pipelines, automobiles, trucks, aviation, refueling, buildings, coal, gasification, plants, mining, surface mining, fields, land reclamation, coastal zone management, corporate public service, educational programs, crude oil, deepwater ports, and watercraft It also documents numerous products other than gasoline produced by the petroleum industry, such as propane, lubricants, heating oil, and plastics.

The Smithsonian Institution Festival of American Folklife, held annually since 1967 on the National Mall in Washington, D.C., was renamed the Smithsonian Folklife Festival in 1998. The materials collected here document the planning, production, and execution of the annual Festival, produced by the Smithsonian Center for Folklife and Cultural Heritage (1999-present) and its predecessor offices (1967-1999). An overview of the entire Festival records group is available here: Smithsonian Folklife Festival records.