The Holt Labor Library was a library in San Francisco from 1992 to 2019 that collected and made accessible primary and secondary source material related to labor history and the history of the radical left, with an emphasis on the activities of American Trotskyist political organizations. The Library also collected materials related to various anti-war movements, the women's movement, gay liberation, the African American Civil Rights Movement, among other social justice causes.

1,246 items 295 audiocassettes, 90 audio reels, and 375 computer discs, 10 film reels, 52 video discs, and 424 videocassettes.

All requests for permission to publish or quote from manuscripts must be submitted in writing to the Director of Archives and Special Collections. Permission for publication is given on behalf of Special Collections as the owner of the physical materials and not intended to include or imply permission of the copyright holder, which must also be obtained.

There are no access restrictions on this collection.