The book "Letters in which are reflected the most prominent doctrines of the Church of Jesus Christ of Latter-day Saints" is written under the authorship of Spencer and Orson. This book is a very important resource for those interested in studying the teachings of The Church of Jesus Christ of Latter-day Saints. It highlights the main ideas and teachings of this church, which will help readers better understand its principles and faith. The authors reveal and explain in detail the key aspects of belief and practice that distinguish the Latter-day Saint church from other denominations. The book is of great importance to adherents of this church, as well as to all who are interested in religious matters and religious history.