A Study of the Sects is a book written by William H. Lyon and originally published in 1907. The book is a comprehensive analysis of various religious sects and denominations that existed in the United States during the early 20th century. Lyon provides an in-depth examination of the beliefs, practices, and histories of these sects, including the Mormons, Seventh-Day Adventists, Christian Scientists, and many others. He also explores the origins of...