The papers of folk art collector and museum curator Herbert Waide Hemphill date from 1776-1998, bulk 1876-1998, and measure 26.7 linear feet. Found within the papers are biographical materials, personal business records, files documenting his collecting, writings, art work, minutes of meetings, a scrapbook, printed material including exhibition and auction announcements and catalogs, and miscellaneous artifacts. The collection also contains numerous photographs of Hemphill, family members, his residences, friends and colleagues, exhibitions, travel, and art work. Sound and video recordings include interviews of Hemphill.

The records of the Nicholas Wilder Gallery of Los Angeles measure 2.4 linear feet and date from 1944 through 1984, with the bulk of materials dating from 1968-1979. Scattered documentation of the contemporary art gallery's fourteen years of operation include artists' inventory cards, photographic transparencies, letters and correspondence, invitations, notes, business and financial documents, and printed materials.

Twenty portraits, taken in the 1980s, of twenty-one men and women who were active in the civil rights and peace movements of the 1960s.

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 Lorence-Monk Gallery measure normal="1957"> and scrapbooks documenting approximately ninety exhibitions and over 250 American and European artists represented by the gallery from its opening in 1985 until it closed its operation in 1992.

The papers of sculptor, writer, and earthworks artist Robert Smithson and his wife, sculptor, filmmaker, and earthworks artist Nancy Holt measure 15.1 linear feet and date from 1905 to 1987, with the bulk of the material dating from 1952 to 1987. The papers consist of Smithson's biographical material; business and personal correspondence, much of it with artists; interview transcripts; extensive writings and project files; financial records; printed material; a scrapbook of clippings; holiday cards with original prints and sketches; photographic material; and artifacts. Also found are project files related to Nancy Holt's motion picture film Pine Barrens and her seminal environmental work of art Sun Tunnels, including a video documentary about Sun Tunnels.

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 Chuck and Jan Rosenak research material dates from circa 1938-2008 and measures 17.6 linear feet. The collection contains research files for four books by the Rosenaks and includes letters, writings, notes, printed matter, tape-recorded interviews with artists, and photographic material.

The Ann W. Heymann interviews with artists measure 0.4 linear feet and date from 1974 to 1985. Heymann conducted interviews with 47 artists from the San Francisco Bay Area, Miami area, Arkansas, and New Orleans. The interviews were done in preparation for articles and writings published in or submitted to Art Voices/South and other publications; the Miami interviews were live radio broadcasts. Most of the interviews contain biographical information, artists' statements, and political and social attitudes.

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.