The X Bar X Boys on Whirlpool River (X Bar X Boys Series)

216 pp. Walter S. Rogers jacket art and frontispiece, Gretta endpapers. The X Bar X Boys was a series of western adventures for boys created by the Stratemeyer Syndicate and written under the pseudonym of James Cody Ferris and published by Grosset & Dunlap. At first, a total of 2 or 3 volumes were published per year, but in 1930, it slowed to 1 book per year. In 1942, the series was discontinued.