The Stockton Corral of Westerners Collection contains the articles of incorporation, by-laws, awards information, membership lists, financial records, correspondence and memos, newsletters (Smokesignal), publicity and promotions, minutes of Posse (officers' meetings), publications records, collected Westerners publications, newspaper clippings, and photographs. Holt-Atherton is the depository library for the Stockton Corral of Westerners.

The first Corral of the Westerners was established in Chicago on March 27, 1944. Sixteen Stockton (Calif.) men interested in western history laid the framework for the establishment of a Corral there patterned after the Chicago Westerners. Leland Case, a founding member of the Chicago Corral was also one of the founding members of the Stockton Corral. The Corral was organized and chartered as the fourteenth member organization of the Westerners International (1958). Its pincipal activity is the study and dissemination of the history of the American West through regular meetings and a quarterly, The Far Westerner (Vol. I, No. 1 January 1960). Occasionally the Corral also publishes collections of member articles as Valley Trails.

Collection is open for research.