The Pony Rider Boys in the Grand Canyon; Or, The Mystery of Bright Angel Gulch

Grace Harlowe's Overland Riders at Circle O Ranch

The saddle boys on the plains

The Pony Rider Boys on the Blue Ridge; or, A Lucky Find in the Carolina Mountains

The Pony Rider Boys with the Texas Rangers; Or, On the Trail of the Border Bandits

The Pony Rider Boys in the Alkali; Or, Finding a Key to the Desert Maze

The Saddle Boys in the Grand Canyon; or, The Hermit of the Cave

The Boy Scouts in the Saddle

The Frontier Boys in the Grand Canyon; Or, A Search for Treasure

The Pony Rider Boys in Louisiana; or, Following the Game Trails in the Canebrake

The Pony Rider Boys in Texas; Or, The Veiled Riddle of the Plains

The Pony Rider Boys in the Ozarks; Or, The Secret of Ruby Mountain