Appendix to the great western story Roughing It by Mark Twain, Published in 1872 and worth a read in these topsy-turvy times. Maybe not 100% accurate but it is a commentary by a man who actually knew Brigham Young.
Appendix. A. Brief Sketch of Mormon History.
Mormonism is only about forty years old, but its career has been full of stir and adventure from the beginning, and is likely to remain so to the end. Its adherents have been hunted and hounded from one end of the country to the other, and the result is that for years they have hated all “Gentiles” indiscriminately and with all their might. Joseph Smith, the finder of the Book of Mormon and founder of the religion, was driven from State to State with his mysterious copperplates and the miraculous stones he read their inscriptions with. Finally he instituted his “church” in Ohio and Brigham Young joined it. The neighbors began to persecute, and apostasy commenced. Brigham held to the faith and worked hard. He arrested desertion. He did more–he added converts in the midst of the trouble. He rose in favor and importance with the brethren. He was made one of the Twelve Apostles of the Church. He shortly fought his way to a higher post and a more powerful–President of the Twelve. The neighbors rose up and drove the Mormons out of Ohio, and they settled in Missouri. Brigham went with them. The Missourians drove them out and they retreated to Nauvoo, Illinois. They prospered there, and built a temple which made some pretensions ….