Hosea Stout was a participant in the mainstream movement as the newly formed Mormon Church expanded its membership and range. He held numerous positions of responsibility in church, civic, and governmental organizations, including as officer of the militias of Illinois and Utah, attorney general of the state of Deseret and the territory of Utah, and president of the house of the Utah Territorial Legislature. Such positions gave Stout the opportunity to observe and record events of great moment in Mormon history that were outside the reach of many diarists. His records of the territorial legislature offer a more informative and detailed account of the affairs of the legislative assembly than even the official journals of that body. Yet Stout also imbues his diaries with a sense of the familiar, recounting moving experiences from his daily life. This edition of On the Mormon Frontier presents Stout's diary in a single volume, proving that it continues to be an essential work in the study of Mormon and American history.