Licensed title based on the Hopalong Cassidy movies and TV show starring William Boyd. Boyd owned all licensing rights to the Hopalong Cassidy character. Issues 1-85 were published by Fawcett Comics. DC acquired this when Fawcett folded.
Issues 86-108 have photo covers, some of which are reprinted from the Fawcett series.
Script and art credits for stories and fillers verified from copies of editorial records sent to Gene Reed from Nelson Bridwell in 1986.