The records of Artists Talk on Art (ATOA) measure 64.4 linear feet and 43.9 terabytes and date from circa 1974-2018. The bulk of the records consist of extensive video and sound recordings of artists, critics, historians, dealers, curators and writers discussing contemporary issues in the American art world in hundreds of panel discussions, open screenings, and dialogues held in New York City from 1975 to 2016. A smaller group of records include administrative files, panel flyers, three scrapbooks, as well as photographs, slides, and negatives of panel discussions and participants.

The records of the Terrain Gallery measure 5.3 linear feet and date from circa 1950s-2005, bulk 1955-1985. The bulk of the records consists of exhibition files that document over one hundred and forty exhibitions as well as the gallery's relationship with artists. The collection includes founding documents, correspondence, artists' files, writings and an interview, financial records, scrapbooks, and photographs.

The Leo Castelli Gallery records measure 215.9 linear feet 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.

The records of New York City Fischbach Gallery measure 39.3 linear feet and date from 1937 to 2015, with the bulk of materials dating from 1963 to 1977. The majority of the collection consists of artists files containing a wide variety of materials documenting the gallery's relationship with its stable of modern and avant garde artists, as well as gallery exhibitions. Files include biographical materials, correspondence, printed materials, and photographs. Gallery records also include general business correspondence, access-restricted financial records; and additional printed materials. The 2015 addition of 14 linear feet consists of inventory and client sales records in the form of card indexes.

The papers of Los Angeles art critic and writer, art historian, professor, collector, and artist Fidel Danieli (1938-1988) measure 8.4 linear feet and date from 1962 to 1987. Found within the papers are writing and research files, and 108 sound recordings of interviews with or about 45 Los Angeles artists conducted by Danieli in 1974-1975 for the U.C.L.A. oral history project "L.A. Community Artists." There are also sound recordings of art performances and art talks, and printed materials, including numerous exhibition announcements.

The papers of New York City and Berlin, Germany based multi-media and conceptual artist Matt Mullican measure 27.8 linear feet and date from circa 1968-2017. The collection consists of biographical material, including a few interview transcripts; correspondence; over 100 notebooks; gallery and exhibition files; project and commission files; personal business records; printed material; and photographs. The notebooks document nearly five decades of Mullican's work process and illustrate his material and conceptual explorations. Large sequences of gallery and exhibition files, as well as project and commission files comprise the remaining bulk of the collection, providing detailed documentation of his professional career, particularly from the 1980s-2000s.

The records of the Los Angeles Institute of Contemporary Art measure 18 linear feet, date from 1973 to 1988, and document the brief thirteen-year history of LAICA's activities as a Southern California visual arts organization and exhibition space for contemporary art. Records detail the founding of the organization, operations and administration, exhibitions, events, and publications. More than half of the collection is comprised of exhibition, program, and event files that include correspondence with artists, curators, and others; printed materials; and photographs, negatives, and slides.

The papers of painter, photographer and sculptor Lowell Nesbitt measure 50.2 linear feet and 0.001 GB and date from circa 1903-1993 (bulk 1950-1993). The collection documents Nesbitt's career through biographical material, correspondence, subject files, business and financial records, source material, artwork, photographs and audiovisual records, printed material and scrapbooks.

The papers of art collector Charles Rand Penney measure 23.1 linear feet and date from 1923 to 1994 with the bulk of the collection dating from 1945 to 1994. The majority of the collection consists of Penney's art collection files, which include printed materials, correspondence, notes, and photographic materials. Also found within the papers are catalogs from exhibitions that featured artwork from Penney's collection.

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.