The Lewis & Valentine Company Collection contains records of the Lewis & Valentine Company dating from 1916 to 1971 including photographs, negatives, brochures, books, trade catalogs, company papers, letters from clients, customer lists and a history of the company written by Harold Carman Lewis. Photographs document the Rodin Museum in Philadelphia, estates in Long Island, New York, and the properties of Hugh D. Auchincloss, Eugene du Pont, Walter P. Chrysler, Otto H. Kahn, F. W. Woolworth, Pierre S. du Pont (Longwood Gardens), Charles M. Schwab and Edward T. Stotesbury. This collection contains only a sampling of the records of Lewis & Valentine and should not be considered comprehensive.

Correspondence; photographs; scrapbooks; and printed material.

These papers consist of research materials collected and used by Professor Carol Herselle Krinsky for her book Contemporary Native American Architecture: Cultural Regeneration and Creativity.

The Corliss Knapp Engle slide collection contains 35mm slides of gardens, garden features, flower shows, and flora photographed by Corliss Engle, a self-taught photographer and horticulturalist. Much of the collection is comprised of photographic documentation of numerous private and public gardens that she visited throughout the United States. Of particular note are images of Engle's own garden in Brookline, Massachusetts, spanning three decades; they provide excellent insight into the development and evolution of a garden over time. Portions of the collection highlight Engle's involvement with the Garden Club of America and the GCA's Garden History and Design Committee. The collection also includes various notes, lecture scripts, brochures, programs and articles on garden and plant-related themes generated or compiled by Corliss Knapp Engle.

Percy B. Eckhart was a lawyer, a prolific oil painter, and a supporter of the arts. Most of the film footage in this collection is of travel, but there is also film footage of his family, and of a fiction film.

The papers of Claudia DeMonte and Ed McGowin measure 7.2 linear feet and date between 1960 and 2018. The papers primarily document Claudia DeMonte's career as a painter, and to a lesser extent her husband's career, through correspondence with family, friends, colleagues, and art institutions; notebooks, poetry, and other writings; scrapbooks; curriculum vitas, awards and certificates, commissions, and other professional activity; exhibition announcements and catalogs, newspaper clippings, magazine articles, and other printed material; sketchbooks and other artwork; personal photographs, portraits, of artwork, and other photographic material.

The papers of sculptor Bessie Potter Vonnoh measure 0.8 linear feet and date from circa 1860 to 1991, with the bulk of material dating from 1890 to 1955. The scattered papers document the personal life and career of Bessie Potter Vonnoh, and, to a lesser degree, her husband, painter Robert William Vonnoh. Found within the papers are Vonnoh family correspondence, including letters between Bessie and Robert, and professional and personal correspondence, primarily Bessie's. The collection also contains scattered biographical materials, photographs of the Vonnohs, a photograph album, photographs of artwork, clippings, exhibition catalogs, and other printed material.

The Cook Labs records, which date from 1939-2002, document the activities of audio engineer Emory Cook and his label Cook Labs. The contents include business records, materials relating to recording artists, photographs, and production materials, as well as phonograph records, master recordings and unpublished recordings produced by or associated with the Cook Labs label. The collection also contains two interviews conducted with Emory Cook in 1990: one by Jeff Place and one by Anthony Seeger and Nicholas Spitzer. There are several physical objects relating to Cook Labs including a bag of powdered vinyl, a binaural playing arm, and a condenser microphone.

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 bulk of the George Brown Goode Collection (Record Unit 7050) predates the establishment of the present-day Smithsonian Institution Archives. A small addition of autograph letters was received from the Division of Political History, National Museum of American History in 1983 under accession number 83-081.