The National Congress of American Indian (NCAI), founded in 1944, is the oldest nation-wide American Indian advocacy organization in the United States. The NCAI records document the organization's work, particularly that of its office in Washington, DC, and the wide variety of issues faced by American Indians in the twentieth century. The collection is located in the Cultural Resource Center of the National Museum of the American Indian.

The papers of art critic, writer, and historian Elizabeth McCausland measure 45 linear feet and date from 1838 to 1995, with the bulk of the material dating from 1920 to 1960. The collection provides a vast accumulation of research data on various artists and aspects of American art, especially the early American modernists and the Federal Arts Projects. Papers include McCausland's extensive research and writing files, particularly on Marsden Hartley, E. L. Henry, Lewis Hine, George Inness, and Alfred H. Maurer. McCausland's correspondence with artists includes a substantial amount with Arthur Dove and Alfred Stieglitz. Her collaborative work with Berenice Abbott on the Changing New York book and series of photographs is well-documented within the collection. Also found are general writings, subject files, files relating to exhibitions, teaching, and committees, photographs, art work, personal papers, and printed material. Additional McCausland material donated later from the estate of Berenice Abbott include biographical materials, project files, writings, and printed materials.

While the collection is focused rather specifically on the development of television in America, including technical details, legal proceedings, marketing and advertisement, and manufacturing, it is also a rich source for the history of American advertising, work cultures, sales, and entertainment. There is also information about radio, mostly in p...

This collection contains the professional papers of anthropologist Marvin Harris. Harris was a prominent anthropologist, best known for developing the controversial paradigm of cultural materialism. He authored several important books in the field of anthropology and taught at Columbia University and The University of Florida. The papers include correspondence, research materials, his publications, unpublished manuscripts, conference papers, lectures, subject files, teaching files, computer files, and photographs.

This collection consists of six feet of material documenting Porter's many scientific contributions. The following types of material are included: photographs, lecture notes, correspondence, trip notes, newspaper clippings, symposium programs, papers, and periodicals, circa 1930s-1980s.

The papers of feminist art historian and educator Linda Nochlin measure 31.2 linear feet and 3.9 gigabytes and date from circa 1876, 1937 to 2017. The collection is comprised of biographical materials; date books and notebooks; correspondence; writing project files that include material on Gustave Courbet and realism, bathers and the body, essays and lectures on 19th century art among other topics, artists, and smaller writing projects; professional files containing material on conferences and fellowships; teaching files detailing courses taught by Nochlin at New York University Institute of Fine Arts and other institutions; printed materials; artwork; and photographic materials that document Nochlin and her relationships with family, colleagues and friends, and artists.

The H. Weber & Sons Co. records document the professional activities of The H. Weber & Sons Company, a florist business consisting of a florist shop and greenhouse which was located in Oakland, Maryland. The collection contains business records, photographs, horticultural medals and wire frames used for floral displays.

The collection documents, through printed materials, photographs, audio and moving image, Don Herbert's career as a science educator under the persona of "Mr. Wizard" from 1951 until the 1990s.

The papers of LeRoy Neiman measure approximately 70.5 linear feet and date from 1938-2005. The collection includes biographical materials, correspondence, project files, printed material and artifacts documenting the career of the American painter LeRoy Neiman.

The papers of American sculptor Stephen Antonakos measure 24.2 linear feet and 1.73 GB and date from 1932-2014, with the bulk of the material dating from 1960-2014. The collection documents Antonakos's pioneering work in neon, through biographical material, correspondence, writings and notes, project files, exhibition files, printed and digital material, and photographs.