I can't recall another Hopalong Cassidy film where William Boyd got involved with a character from the real west. Possibly fans more versed in Hopalong Cassidy films can correct me, but in this film Hoppy gets to meet up with none other than the legendary female outlaw Belle Starr.
Belle's a good stand by your man kind of woman. When her husband was caught at rustling and as Hoppy explains it we're not clear if she knew anything about it. Still when the posse came she shot it out with them and did a stretch in the joint. Now she's back and as luck would have it her spread is next to the Bar 20. She's got a daughter Jacqueline Starr and the Starrs Belle and Jacqueline are played by Natalie Moorhead and Dorothy Short.
Unbeknownst to Belle her foreman, Alden Chase, is still using the Starr ranch as a cover for rustling. It's up to Hoppy and his two trusty companions Russell Hayden and Gabby Hayes to set things right.
The real Belle Starr was born in Missouri and did her outlaw thing in Oklahoma then called Indian Territory. In fact Belle's husband Sam Starr was an Indian. Unlike sweet innocent Jacqueline, Belle's real daughter Pearl Starr became a known prostitute and operator of several bordellos in the Old west.
There was a famous film with her as the central title character that starred Gene Tierney. But it wasn't any closer to the truth than this film.
Still it's not a bad film for the Hopalong Cassidy series.