The records of New York Byron Gallery measure 16.3 linear feet and date from circa 1950s-1991, with the bulk of the material dating from 1960-1971. The records document the gallery's representation and exhibition of Surrealist and contemporary American artists, as well as the occasional pre-Columbian and Old Masters artwork. Found are over ten linear feet of artists and subject files, fifty-seven exhibition scrapbooks, exhibition catalogs, and sales records. There are also exhibitions catalogs of the Milan Galleria Dell'Arieti.

The papers of New York museum director and independent curator Thomas M. Messer measure 4.6 linear feet and date from 1949-2010. Material includes correspondence, a diary transcript, and printed material that reflect Messer's long career, primarily as director of the Solomon R. Guggenheim Foundation. Correspondence comprises the bulk of the collection and documents the relationships he built with artists, art historians, curators, and others colleagues. Notable correspondents include Francis Bacon, Will Barnet, Larry Bell, Alberto Burri, Pol Bury, Marc Chagall, Chryssa, Jean Dubuffet, Max Ernst, Dan Flavin, Helen Frankenthaler, Alberto Giacometti, Richard Hamilton, Jean Hélion, Grace Knowlton, Rosemarie Koczy, Jirí Kolár, Katharine Kuh, Agnes Martin, Henry Moore, George Rickey, Charles Simonds, Clyfford Still, Jack Tworkov, and many others.

The papers of Wisconsin painter, educator, and draftsman John Wilde measure 21.3 linear feet and date from 1935 to 2011. The papers consist of biographical material, correspondence, interviews, writings and notes, 27 journals, personal business records, exhibition files, two scrapbooks, photographic materials, six sketchbooks, artwork, and nearly 90 limited edition, letterpress artist collaboration books – many that include artwork contributed by Wilde.

An outstanding scholar in the field of Iranian studies, Ernst Herzfeld (1879--1948) explored all phases of Near Eastern culture from the prehistoric period to Islamic times. This collection documents Herzfeld's excavations at Samarra, Persepolis, Pasargadae, and Aleppo and includes correspondence; field notebooks; drawings; sketchbooks; inventories of objects; "squeeze" copies of architectural details; and photographs.

The records of the New York Artists Equity Association (NYAEA) measure 26.8 linear feet and date from 1920-2012. The records include history and founding documents, presidents' files, board of directors' files that include monthly board meeting minutes, committee files and annual membership meeting minutes, general administrative and correspondence files, financial and legal files, event and program files, artists and subject files, extensive individual membership files, art project and exhibition files, Broome Street Gallery files, NYAEA publications that include issues of The Artists Proof, printed materials, four scrapbooks, sketches created by artists attending a party in honor of Yasuo Kuniyoshi, and photographs of member artists and events.

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 Walter Rosenblum Collection is comprised of 7,396 silver gelatin negatives taken by noted photographer Walter Rosenblum (1919-2006) for New York art galleries, collectors and artists between 1945 and 1976. The collection reflects the art of his time and is particularly strong in American and European avant-garde, surreal and abstract works.

The Jacques Lipchitz papers and Bruce Bassett papers concerning Jacques Lipchitz measure 52.8 linear feet and are dated circa 1910-2001, with the bulk of the material from the period 1941-2001. Papers are comprised of sculptor Jacques Lipchitz's personal papers and filmmaker Bruce Bassett's papers relating to Jacques Lipchitz. Lipchitz's personal papers contain personal and professional correspondence, comprising nearly half of the series, and biographical material, writings by and about Lipchitz, printed material, and photographs documenting Lipchitz's commissions, exhibitions, friendships, and interests. Also found are records relating to the compilation and production of The Sculpture of Jacques Lipchitz: A Catalogue Raisonné by Alan G. Wilkinson. The Bruce Bassett papers relating to Jacques Lipchitz consist mainly of Bassett's extensive audiovisual documentation of Lipchitz's life and art. Also found are paper records related to the audiovisual projects, including letters, business records, printed materials, and production records. A small quantity of material unrelated to Lipchitz is also found among the Bassett material, including video and sound recordings related to Sidney Lifchez, IBM, Isamu Noguchi, the Storm King Sculpture Center, and Auguste Rodin.

The papers of Reginald R. Isaacs measure 22.54 linear feet and date from 1842 to 1991, with the bulk of the material from 1928 to 1991. The collection includes Isaacs's personal and professional papers, as well as extensive research material he collected and created for his two-volume biography, Walter Gropius: The Man and His Work.

The papers, 1878-1964 (20.5 linear feet) of museum curator, director, and art scholar William Mills Ivins (1881-1961) consist of correspondence, writings, notes, photographs, and Ivins family papers. Ivins was Curator of Prints, 1916-1946, Assistant Director, 1933-1938, and Acting Director, 1938-1940 at the Metropolitan Museum of Art. The collection contains professional and personal correspondence with art historians, art dealers, museum curators, print and book collectors, and artists concerning the history of print making, book design and illustration, print collectors and collecting, exhibitions, and museum administration. Also found are Ivins' published and unpublished writings and lectures, and notes. The collection contains some Ivins' family papers including family correspondence, genealogies, and photographs.