The records of the American Academy in Rome measure 65.9 linear feet and date from 1855 to 2012. The collection documents the history of the institution from its inception in 1894 as the American School of Architecture in Rome, through the end of World War II, and chronicles the contributions the academy has made to America's cultural and intellectual development. Nearly one-half of the collection consists of an unprocessed addition received in 2014 containing records that mostly post-date World War II and include correspondence and subject files of officers and executives based in the New York office of American Academy in Rome.

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, 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.

These records document the governance and programmatic activities of the Museum of the American Indian/Heye Foundation (MAI) from its inception in 1904 until its sublimation by the Smithsonian Institution in 1990. The types of materials present in this collection include personal and institutional correspondence, individual subject files, minutes and annual reports, financial ledgers, legal records, expedition field notes, research notes, catalog and object lists, publications, clippings, flyers, maps, photographs, negatives and audio-visual materials. These materials span a varied range of subjects relating to the activities of the museum which are more fully described on the series level.

The collection documents the activities of the United Shoe Machinery Corporation of Beverly, Massachusetts, manufacturers of shoe machinery equipment. The collection consists of engineering records, legal records, research and development records, employee/personnel records, correspondence, company catalogs, product literature, advertising materials, photographs, and moving images.

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.

Duncan Schiedt (1921-2014) was a jazz scholar, writer, photographer, film maker, researcher and pianist. He authored four books relating to jazz history. Many of his photographs and articles were featured in magazines, periodicals and documentaries. Schiedt also collected the work of other photographers on the subject of jazz. The collection primarily consists of photographs created by or collected by Mr. Schiedt.

The records of the Downtown Gallery date from 1824 to 1974 (bulk 1926-1969) and measure 109.56 linear feet. The records present a comprehensive portrait of a significant commercial gallery that operated as a successful business for more than forty years, representing major contemporary American artists and engendering appreciation for early American folk art. There is an unprocessed addition to this collection dating circa 1970 of a single financial/legal document.

The records of Jacques Seligmann & Co. measure approximately 203.1 linear feet and date from 1904 to 1978, with bulk dates from 1913 to 1974. The collection includes extensive correspondence files, reference material on American and European collectors and their collections, inventory and stock records, financial records, exhibition files, auction files, and the records of subsidiary companies. The collection is an invaluable resource in tracing the provenance of particular works of art and provides a comprehensive view of the activities of collectors and art dealers in the years leading up to and following World War II.

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.