Wyn Roosevelt

Frontier Boys in Frisco

2022

Frontier Boys on the Coast

2021

Frontier Boys in the South Seas

2024

Frontier Boys in the Sierras

2019

Frontier Boys in the Grand Canyon

2024

Frontier Boys on the Coast or in the Pirate's Power

2022

Frontier Boys in the Sierras; or, the Lost Mine

2016

Frontier Boys on the Overland Trail

2014

Frontier Boys in the Saddle

2014

Frontier Boys in the Rockies, or a Winter in the Big Canyon

2014

Frontier Boys in the Grand Canyon; or, a Search for Treasure

2015

Frontier Boys in Mexico, or Mystery Mountain

2014

Frontier Boys in Hawaii, or the Mystery of the Hollow Mountain

2014

Frontier Boys in Colorado, or Captured by Indians

2014