The Sin of Harold Diddlebock sub-series (1944-1951) contains materials related to the development, production, and post-production of the California Pictures Corporation film, The Sin of Harold Diddlebock (1947), also known as Mad Wednesday. Records include advertising and publicity, legal, production and direction, and story development records, as well as film soundtracks. Materials included are correspondence, pressbooks, newspaper and magazine clippings, black-and-white photographic prints and negatives, music scores and sheets, contracts, agreements, screenplays, continuities, and casting sheets.

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.