Special Collections in the Hartnell College Library include the O. P. Silliman Memorial Library, the Hartnell College Library Archives, and other selected items that have been donated or identified as unique, rare, or of exceptional monetary or historical value. The college archives document the history of Hartnell College. Yearbooks, newspapers, college catalogs, schedules of classes, reports, meeting minutes, scrapbooks, and photographs are included in this collection.
The Hartnell College Library's digital collection at California Revealed consists of texts and moving images from the 1930s-1990s. The collections includes yearbooks, as well as recordings of events, interviews, and presentations.