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The Two Babylons: or, the Papal Worship Proved to be the Worship of Nimrod and his Wife (1916) by Alexander Hislop
Hislop’s work, nearly 100 years old, is still the best starting point for studying comparative religion. Of course, there is much in it that is no longer valid, and so long as the Vatican still stands,it will probably always feature on their banned books list, however, the main theme of the book is incontestable, which is probably why I know of no serious rebuttal.