Republic Pictures Corporation, began as a motion picture laboratory in 1915. By 1935, Republic had become a studio and released its first movie, Westward Ho! starring a young John Wayne, who would stay with Republic for the next 17 years. Republic would go on to produce highly successful Westerns starring singing cowboys Gene Autry and Roy Rogers as well as serial adventure series. The studio cranked out so many exciting (not to mention money-making) serials that it became known as "The Thrill Factory." Occasionally, Republic would produce and distribute "A" features, such as Macbeth and The Quiet Man, but it was the "B" Westerns and adventure serials that they knew best how to produce and market. Until its demise in 1959, Republic fed hungry moviegoers with a steady diet of "B" Westerns, serials, dramas, series pictures and musicals.

The Republic Pictures Checklist provides a full listing of Republic releases, with plot synopses, release dates, alternate titles, chapter titles and awards. All of Republic's output, including documentaries and training films, is included.