Buku yang Dikarang by Wyn Roosevelt

The Frontier Boys in the Grand Canyon A Search for Treasure

Frontier Boys in Frisco

The Frontier Boys in the Sierras Or, The Lost Mine

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

Frontier Boys in the South Seas

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

The Frontier Boys in the Sierras; Or, The Lost Mine