"The Frontier Boys in the Grand Canyon: A Search for Treasure" is an adventure novel written by Wyn Roosevelt. In this story, readers follow a group of young boys known as the Frontier Boys as they embark on an exciting adventure in the Grand Canyon. The plot revolves around the discovery of an old map that hints at hidden treasure within the Grand Canyon. Intrigued by the possibility of uncovering riches, the Frontier Boys set off on a perilous journey...