Yellowstone National Park is home to a vast array of landscapes and a huge diversity of animals, united in a fascinating ecosystem, one that is ...

An orphan whose father has been killed by bandits inherits a mine. Cisco saves the mine and the child and also finds the child’s real mother.

The local school is causing Hoppy problems. First Bar 20 cattle are stolen when Hoppy investigates a problem there. Then the new teacher arrives ...

Beneath the spectacular beauty of Yellowstone National Park lies a ticking time bomb…a supervolcano that’s overdue for its next ...

Belle Starr has returned from time in prison only to face a hail of bullets, along with rescue by Hoppy and the Bar 20 gang.

Hoppy goes undercover as an outlaw (which permits him, for once, to drink and be mean to children) to track down a bunch of outlaws operating ...