William Warren wrote this tome to propose a polar Eden, in some primeval ice-free epoch. He systematically employs data from contemporary geology, ethnology, zoology, botany, and paleontology to bolster this argument. Warren's review of the literature of the folklore of the world mountain, the tree of life, and the earthly paradise is of continuing value, and worth reading if you have any interest in the mysteries of our past.
This text that brings an interesting perspective on the foundational work Zen presents in his title Paradise: Sides of the North and the Mount of Congregation. This text, written over 100 years ago brings together a grand picture of the esoterica gone by and sits perfectly well alongside Zen's conclusion that The Throne of The Most High dwells above the celestial north pole above the north star. Warren, in this text, describes the ancient Eden located directly under that north star and even includes details from various sources describing the ancient Tree of Life. How this all fits together is a mystery we're all solving together, one piece at a time. (430 pages)