Tales of the Texas Rangers aired on NBC Radio from 1950 to 1952 and later on CBS Television from 1955 to 1958. Film star Joel McCrea voiced the radio version as the fictitious Texas Ranger Jayce Pearson, who uses the latest scientific techniques to identify criminals. His faithful horse, Charcoal (or "Charky"), helps Pearson to track down the culprits. The radio shows are reenactments of actual Texas Ranger cases.
On the radio Jayce Pearson often worked by request with a local sheriff's office or police department, but in the television version, Willard Parker assumed the role of Jace Pearson and had a regular partner, Ranger Clay Morgan, who had been an occasional character on the radio show. Morgan was portrayed in the television version by Harry Lauter.
The radio series used contemporary cases and modern detective methods to solve crimes; it was a procedural drama, in many ways Jack Webb's Dragnet with a western flavor. (Source: wikipedia.org)