Betsy King Ross

The Phantom Empire, starring Gene Autry the Singing Cowboy, was a 12-chapter 1935 Mascot serial that combined the western, musical, and science fiction genres. The first episode is 30 mins, the rest about 20 minutes. This was Gene Autry's first starring role, playing himself as a singing cowboy. (Wikipedia)

12 chapter Mascot serial, Kit leads a group carrying a large gold shipment across the wild West. the Mystery Riders want a government shipment of gold carried by the wagons. Will Kit prevent them from finding and carrying away the gold? (archive.org)

After Smoke wins the Blake ranch in a poker game, Blake commits suicide and Smoke deeds the ranch to Blake's young daughter. But the Sheriff is after the ranch and has Smoke arrested for the murder of Blake and then brings in an impostor to pose as the girl's relative.