Bob Schaller

Bob Schaller

Bob Schaller has written at least 9 books. Their most popular book is Crime in a Colorado cave with 0 saves with an average rating of -⭐.

Crime in a Colorado cave
The great Florida chase
California Gold Rush fever
Treasure in Texas
Adventure in Wyoming
South Dakota treaty search
Message in Montana
Mystery in Massachusetts
Michael Phelps: The Untold Story of a Champion