Bonneville and the South Pass here:
Benjamin Bonneville, an inept fur trader who some speculate may have actually been a spy, leads the first wagon train to cross the Rocky Mountains at Wyoming's South Pass.
Mormons settle in Salt Lake:
After 17 months and many miles of travel, Brigham Young leads 148 Mormon pioneers into Utah's Valley of the Great Salt Lake. Gazing over the parched earth of the remote location, Young declared, "This is the place," and the pioneers began preparations for the thousands of Mormon migrants who would follow.