- Kenneth L. Waller Bataan Prisoner of War Collection contains materials recording Waller's years as a prisoner of war (POW) in the Pacific Theater, from September 1941 to August 1945. The materials include photographs, an excerpt from a book, an annotated map, and a transcript of an oral history compiled by Waller and Sandy McKennon in 1980.
- The Fairs Collection contains archival and printed material created in three separate offices: Western Fairs Association, a non-profit trade association; Division of Fairs and Expositions, an agency of the California Department of Food and Agriculture; and the Joint Committee on Fairs Allocations and Classification, a legislative group comprised of seven senators and seven assembly members. In addition, material collected through the years by Louis S. Merrill, director of Western Fairs Association from 1945-1972, has been added to the collection.
- This collection, 1972-1999 (bulk 1983-1995), contains the papers of architectural historian Sara Holmes Boutelle, including extensive correspondence, research notes, photographs, interview notes, book drafts, articles, book reviews, presentation notes, and newspaper clippings, primarily relating to California architect Julia Morgan, women in American architecture, and historic preservation in the Bay Area, donated by her heirs in 2000.
- Collection of family papers, office records, and photographs documenting Trinkkeller's artistry and his extensive client list. This included producing ironwork for publisher William Randolph Hearst at his San Simeon estate where Trinkkeller collaborated with architect Julia Morgan; correspondence and photographs within the collection document their work together. Other noteworthy clients were oil magnate Edward Doheny; comedian Will Rogers; movie producer Cecil B. DeMille; and other well–to–do Southern Californians during the period 1896-1942, as reflected in Trinkkeller's original account ledgers.