Drawing Down the Moon (Margot Adler)

Margot Adler's Drawing Down the Moon: Witches, Druids, Goddess-Worshippers and Other Pagans in America is widely regarded as required reading for pagans of any variety. From the back cover: 

Almost thirty years since its original publication, Drawing Down the Moon continues to be the only detailed history of the burgeoning but still widely misunderstood Neo-Pagan subculture. Margot Adler attended ritual gatherings and interviewed a diverse, colorful gallery of people across the United States, people who find inspiration in ancient deities, nature, myth, even science fiction. Contrary to stereotype, what Adler discovered was neither cults nor odd sects, but religious groups that are nonauthoritarian in spirit and share the belief that there is no one single path to divinity. 

This full revised edition of Drawing Down the Moon has been expanded to include an updated resource guide of newsletters, journals, books, groups, and festivals.