<P> The screenplay was written by actress Martha Hyer, the wife of producer Hal B. Wallis, under the pen name "Martin Julien". Director Stuart Millar, a longtime Hollywood producer, had directed only one film, When Legends Die based on the classic novel by Hal Borland, prior to helming Rooster Cogburn . </P> <P> Although True Grit was released by Paramount Pictures, Wallis made a deal with Universal Pictures to finance this film . </P> <P> The film was shot in Oregon, in Deschutes County, west of the city of Bend (for the mountain scenes), on the Deschutes River for the whitewater rapids, and on the Rogue River in the counties of Josephine and Curry, west of Grants Pass (for the river scenes). Smith Rock State Park was a setting as well; the Rockhard / Smith Rock Climbing Guides building at the park entrance was originally built as a set for the movie, where it was portrayed as "Kate's Saloon". </P> <P> John Wayne and Katharine Hepburn were born a mere ten days apart (Hepburn being the elder), and their careers paralleled each other, yet Rooster Cogburn marked the only time the Hollywood veterans appeared together in a film . It was the final film from producer Hal B. Wallis . Although it was promoted as Rooster Cogburn (... and the Lady), the opening credits of the film give the title as simply Rooster Cogburn . </P>

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