The Local History Collection focuses on the history of Orange County California and the cities within Orange County, Southern California and to a lesser extent California as a whole.

The collection includes 3860 cataloged books and pamphlets, correspondence, ephemera, manuscripts, maps, memoribilia, microfilm, papers, periodicals, posters and photographs.

Assorted items relating to collectibles and promotional material for the Star Trek media franchise.

Contains photographs and slides, fan club documents, convention adverisements, and collectible catalogs, brochures, and advertisements. Also contains assorted collectibles and merchandise, including trading cards, patches, stickers and decals, toy packaging, an LP record, a souvenir cup, and poster.