Mormon polygamy:

In this comprehensive survey of LDS polygamy, Van Wagoner traces the origins of the theology in Ohio, the peculiarities common to the practice in the Midwest and later Utah, and the extent of post-1890 plural marriage in Utah, Canada, and Mexico. He includes a chapter on contemporary, fundamentalist polygamy, which claims about 20,000 adherents throughout the so-called Mormon Corridor. What emerges is a fascinating and epic story.