"HOPALONG CASSIDY" Grape-Nuts Flakes Cereal Insert ADVERTISING INSERT OF HOPPY MEASURING 2" BY 3" IN SIZE THE BACK READS: " Listen to America's Favorite Cowboy "HOPALONG CASSIDY" Starring William Boyd in his sensational new radio series of exciting Western Adventures - Mutual Broadcating System, Every Sunday, 4 p.m. Eastern Time , 3 p.m. Central Time, 2 p.m. Mountain Time (Pacific Coast - See your newspapers) Presented By Grape-Nuts Flakes one of the famous Post Cereals "Hopalong Cassidy" was a radio western in the United States, featuring the character Hopalong Cassidy created by writer Clarence E. Mulford. It was syndicated via electrical transcription, beginning in 1948 and continuing into 1950. Its network broadcasts began on Mutual January 1, 1950, and ended on CBS December 27, 1952. The item is complete and in GOOD condition with some spotting on the front and back from paper foxing. (see pictures)