The records of Milch Gallery measure 42.5 linear feet and date from 1911-1995. Edward Milch (1865-1953) opened the Edward Milch Gallery in New York City. In 1916, he formed a partnership with his brother Albert Milch (1881-1951), a gilder and framer, creating E. & A. Milch, Inc., a gallery specializing in American art. Harold C. Milch (1904-1981), Albert's son, was appointed a partner in 1944 and continued the business until his death. Business records of Milch Gallery, 1911-1968, include correspondence, sales records, inventories, financial records, printed matter, photographs, and legal documents. Later additions to the records date from 1922-1995 and include correspondence; artists' files; financial, sales, and stock records; printed material; and photographs.

The Marlene Park and Gerald E. Markowitz research files on New Deal art are dated 1931-1999 and measure 5.8 linear feet. The research files document New Deal art projects and artists through some original correspondence with artists, printed material, interview transcripts, and several sound recordings of interviews with artists of the period. Subject files relate to WPA era art and art projects; many contain numerous photocopies of records from the Personnel Records Center and the U. S. Treasury Relief Arts Projects now in the custody of the National Archives and Records Administration.

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.

The scattered records of the New York contemporary American art Eva Lee Gallery measure 4.0 linear feet and date from 1921-1973. Artist files contain provenance notes, photographs of artwork, records of sales and consignments, exhibition catalogs from other galleries, and reference information on numerous contemporary artists, many represented by the gallery. There are also scattered letters and artwork from artists, scattered sales records of J.B. Neuman's New Art Circle Gallery, and a photocopy of an auction catalog for Korvettes Art Galleries in Douglastan, New York. A significant amount of information is found within the collection about Alexander Calder, Lovis Corinth, Salvadore Dali, Lyonel Feininger, George Grosz, Robert Indiana, Harry Lieberman, Rene Magritte, John Marin, Lowell Nesbitt, Ben Shahn, Victor Vasarely, and Max Weber.

The papers of New York editor and art critic Thomas Hess measure 10.0 linear feet and date from 1939 to 1978. The collection includes biographical materials, correspondence, extensive writings and notes, artists and subject files that also include recorded conversations with artists and others, printed materials, photographic materials, and artwork.

The Howard W. and Jean Lipman papers measure 46.6 linear feet and span the years 1916 to 2000, with one brochure maintained in a research file dating to 1848. The bulk dates for the collection are 1932 to 1992. The papers primarily concern the art collecting activities and interests of the Lipmans which included modern American sculpture, American folk art, and other contemporary American paintings. Found within the papers are correspondence files, notes and printed material that served as research and reference material, along with financial material. The collection also contains writings, notes, and editorial material used by Jean Lipman in her dual roles as an editor for Art in America magazine and as a respected art critic and author.

The records of the Carnegie Institute, Museum of Art measure 265.8 linear feet and date from 1883-1962, with the bulk of the material dating from 1885-1940. The collection includes extensive correspondence between the museum's founding director, John Beatty, and his successor, Homer Saint-Gaudens, with artists, dealers, galleries, collectors, museum directors, representatives abroad, shipping and insurance agents, and museum trustees. The collection also includes Department of Fine Arts interoffice memoranda and reports; loan exhibition files; Carnegie International planning, jury, shipping, and sale records; Department of Fine Arts letterpress copy books, and a copy of the original card catalog index to these records.

The records of the American Federation of Arts (AFA) provide researchers with a complete set of documentation focusing on the founding and history of the organization from its inception through the 1960s. The collection measures 79.8 linear feet, and dates from 1895 through 1993, although the bulk of the material falls between 1909 and 1969. Valuable for its coverage of twentieth-century American art history, the collection also provides researchers with fairly comprehensive documentation of the many exhibitions and programs supported and implemented by the AFA to promote and study contemporary American art, both nationally and abroad.

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.

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.