The Vendetta sub-series (1941-1952) contains material related to the development, production, and post-production of the 1950 RKO Radio Pictures, Incorporated film, Vendetta. Records include correspondence, story development records and screenplays, production and direction records, and historical research. Also included are contracts, agreements, copyrights, stage logs, music cue sheets, and black-and-white photographic prints.

The corporate records for California Pictures Corporation (1919-1965) detail Hughes and Sturges' legal arrangement for the creation and eventual dissolution of their company. Also included are documents for the incorporation of California Pictures, as well as the procurement of screenplay and book rights for potential movie productions. Other materials detail the acquisition of titles under the California Pictures name for Hughes Tool Company in the 1950s, as well as correspondence detailing the 1946 dissolution of the corporation.