Jedediah S. Smith was to western exploration what Benjamin Franklin and Thomas Edison were to the world of invention a legendary figure kiting into the unknown, a lighter of the dark. No one did more to open the American West than this mountain man. His greatest exploring expedition came in 1826 when he looked to the Southwest for trapping grounds.Jedediah Smith's route ran, in modern terms, from Soda Springs in Idaho to the Great Salt Lake, southward...