From Occult America: The Secret History of How Mysticism Shaped Our Nation by Mitch Horowitz:
By the 1830s and 40s, a region of central New York State called “the Burned-Over District” (so-named for its religious passions) became the magnetic center for the religious radicalism sweeping the young nation. Stretching from Albany to Buffalo, it was the Mt. Sinai of American mysticism, giving birth to new religions such as Mormonism and Seventh-Day Adventism, and also to the spread of Spiritualism, Mesmerism, mediumship, table-rapping, séances, and other occult sensations – many of which mirrored, and aided, the rise of Suffragism and related progressive movements. The nation’s occult culture gave women their first opportunity to openly serve as religious leaders – in this case as spirit mediums, seers, and channlers. America’s social and spiritual radicals were becoming joined, and the partnership would never fade.
(via Graham Hancock)
Sadly, my library does not have a copy of this one on order. I might have to rectify that…