 In May 1855, at the direction of then Church President Brigham Young, thirty-two missionaries were sent to evangelize among Native Americans and establish a mission outpost in the Las Vegas Valley.The mission was abandoned in December 1857 due to growing political issues revolving Mormons and the threat of Native American attacks.Between the years 1847 and 1869, over 60,000 Mormon immigrants came and settled in the Salt Lake Valley.