The Hopalong Cassidy radio program ran from 1948 to 1952, and was based on the popular movie and television series featuring William Boyd as Hopalong Cassidy.
Hopalong Cassidy was the star of a series of novels set at the Bar 20 Ranch. They were written by Clarence E. Mulford over a span of 35 years, and had been the basis for a series of 66 movies between 1935 and 1948. The movies were adapted into a television show that originally ran at the same time as the radio program, and the licensing blitz that followed the show's popularity made "Hoppy" into one of the first multimedia sensations.
The radio show featured new adventures, as well as adaptations of the popular movies and some of the TV episodes. William Boyd voiced Hopalong Cassidy, and Andy Clyde co-starred as California Carson, Hoppy's sidekick in many of the later movies. From the Old Time Radio Researchers Group.
Boyd became famous as a silent romance film lead with an annual salary of $ 100,000, but by the late 1920s his career had begun to deteriorate, Boyd found himself out of a contract and close to bankruptcy. Boyd's image appeared by mistake in a newspaper in a story about the arrest of another actor with a similar name, William Stage Boyd , related to charges of gambling and alcoholic beverages (in the Prohibition era , which impaired his career.WIKIPEDIA BIO