Peter Skene Ogden’s Fur Trappers route. Peter Skene Ogden’s map of the Great Salt Lake and the Snake River country. It also shows Ogden’s route of 1828-29, the year he discovered the Humboldt River of Nevada. The Great Salt Lake and Bear River can be seen at the lower right-hand corner if you put the side marked “north” at the top. Carl Wheat, Mapping the Trans-Mississippi West