The China Society of Southern California records, 1935-2015, consist of correspondence, minutes, financial records, bulletins, brochures, invitations, event materials, articles, clippings, publications, certificates, and ephemera documenting the 80-year history of the oldest Sino-American organization in the United States. The majority of the material in this collection comprise correspondence to and from members, board of directors meeting minutes, financial records in the form of statements, account books, financial reports, receipts, and balances, as well as original copies of the Bulletin of the China Society of Southern California, from its inception in 1935 through the 1990s.

Additionally, the collection includes items related to events and gatherings, held by both the China Society and neighboring organizations, in the form of event programs, brochures, invitations, menus, notes, photos, and mock-ups of announcements and programs.

The collection also contains foundation documents consisting of the China Society's Constitution, By-Laws, and Articles of Incorporation as well as Board of Directors information, rosters, membership applications, and lists.

The remainder of the collection includes a some articles, newspaper clippings pertaining to China, a few newsletters and journal publications, certificates, and ephemera in the form of a tie.