The papers of New York City abstract expressionist painter William Baziotes and his wife Ethel measure 6.3 linear feet and date from circa 1900-1992, bulk 1935-1980. The collection includes William Baziotes biographical material, correspondence, writings, printed material, and photographs. The papers of Ethel Baziotes consists of correspondence mostly dated after her husband's death regarding exhibitions of his work, along with limited biographical material and writings.

The records of modernist New York City Kootz Gallery measure 7.1 linear feet and date from 1923-1966. They consist of scattered correspondence and exhibition files; photograph files of artists, including ones for Picasso, William Baziotes, and Hans Hofmann, among many others; 23 scrapbooks; photographs and slides of the gallery and exhibitions; and scattered personal papers of Samuel M. Kootz.

The papers of educator, painter, and art historian William Chapin Seitz measure 32.5 linear feet and date from circa 1930-1995. The collection includes biographical information, correspondence, notebooks, subject and people files, thesis research files, interviews and lecture recordings, teaching files, personal business records, scattered printed materials, photographs, and artwork. The bulk of the papers focus on Seitz's research and teaching career.

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 78.6 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 papers of art historian E. P. Richardson measure 28.7 linear feet and date from 1814-1996, with the bulk of the materials dating from 1921-1996. Within the papers are scattered biographical materials; acquisition files for Richardson's personal art collection; professional and personal correspondence with colleagues, art historians and critics, artists, museums, galleries, and dealers; numerous writings, including manuscripts and research files for his published books, articles, and lectures; general research notebooks and files compiled by Richardson on a wide variety of art-related topics and artists; professional and committee files; as well as a smaller amount of Constance C. Richardson's papers.

The papers of modernist painter Ben Benn measure 6.3 linear feet and date from 1906 through 1977, with the bulk of the papers dating from circa 1920 - circa 1970. The collection includes correspondence between Benn and his wife Velida Benn and letters from Oscar Bluemner, Max Weber, Joseph Stella, and other artists. Also found are sketches, sketchbooks, diaries, scrapbooks, personal business records, clippings, photographs, exhibition catalogs, art journals, and auction catalogs. Some of the printed material is quite rare.

The records of the Richard York Gallery, a New York gallery specializing in American art from early 1800s to 1950, measure 79.3 linear feet and date from circa 1865-2005, with the bulk of the material dating from 1981 to 2004. Three-fourths of the records are artists' artwork files, documenting the sale and consignment of nearly 6,500 works of art. The gallery's activities are also recorded through correspondence, client files, gallery invoices, inventories, business and financial records, printed materials, scrapbooks, photographic materials of artwork, and estate records for the John Marin estate and Sergio Stella estate (Joseph Stella). An addition of 10.2 linear feet, dated circa 1865 to 2005, includes artists' files arranged alphabetically containing printed material, clippings, exhibition announcements, and scattered correspondence and financial documents.

The papers of painter, teacher, and writer Hans Hofmann measure 30.9 linear feet and date from circa 1904 to 2011, with the bulk of the materials dating from 1945 to 2000. The majority of the papers were created after 1932 and document Hofmann's life and professional career after settling in the United States. Among his papers are personal and professional correspondence; records of his schools in Munich, New York City, and Provincetown, Mass.; writings and notes; financial records; photographs; printed matter; estate records; and a small number of personal papers of his second wife, Renate Schmitz Hofmann. Hofmann's personal papers are augmented by a large selection of printed matter, including exhibition catalogs, articles, news clippings, and monographs about Hofmann and modern art, as well as documentary projects including Tina Dickey's compilation of oral histories and records of Hofmann's students, and research materials, sound and video recordings, and motion picture film created and gathered by Madeline Amgott during the production of two video documentaries about Hans Hofmann released in 1999 and 2002. Hofmann's Library was acquired with his papers; inscribed/annotated volumes have been retained with the collection.

The André Emmerich Gallery records and André Emmerich papers measure 311.2 linear feet and date from 1929 to 2009. The collection documents the business of the André Emmerich Gallery as well as André Emmerich's life and activities related to the business of selling art. Gallery records include correspondence; appointment books; administrative and subject files; exhibition files; artist files and accounts; inventory, sales, purchase, and consignment records; chronological files; financial and legal records; printed materials; original artwork; photographic and audiovisual materials. Also found are personal papers and records relating to André Emmerich. TheA small addition received in 2014 includes general correspondence, administrative files, exhibition files, artists' files, inventory records, consignment records, printed material, photographic materials, and André Emmerich personal papers and records.