The book "Mormon City; or Three Days in Nauvoo in 1842" by Henry Casuola tells the story of a trip to the city of Nauvoo, which became the epicenter of the faith of the One Day Consciousness movement. In the hot summer of 1842, the author carefully studied the lives and customs of his contemporaries, which resulted in a fascinating description of Mormon culture and faith. Filled with details, the book offers the reader a unique opportunity to better understand the life of the religious community in its early years and experience the atmosphere of historic Nauvoo. Henry Caswall helps us follow the Mormons in their best light, revealing their history and beliefs from the unique perspective of an observer who lived among them.