Jedediah Smith
Jedediah Strong Smith (January 6, 1799 – May 27, 1831), was a hunter, trapper, fur trader, trailblazer, author, cartographer, and explorer of the Rocky Mountains, the North American West and the Southwest during the early 19th century. After 75 years of obscurity following his death, Smith was rediscovered as the American whose explorations led to the use of the 20-mile (32 km)-wide South Pass as the dominant point of crossing the Continental Divide for pioneers on the Oregon Trail.
Coming from a modest family background, Smith traveled to St. Louis and joined William H. Ashley and Andrew Henry's fur trading company in 1822. Smith led the first documented exploration from the Salt Lake frontier to the Colorado River. From there, Smith's party became the first white Americans to cross the Mojave Desert into California. On the return journey, Smith and his companions were the first United States citizens to explore and eastwardly cross the Sierra Nevada and the treacherous Great Basin Desert. Smith and his companions were also the first white Americans to travel up the California coast (on land) to reach the Oregon Country. Surviving three massacres and one bear mauling, Jedediah Smith's explorations and documentation were important aids to later American westward expansion.