Great, informative source for the origins and growth of occult tarot from its inception in late 18th Century France through the early 20th Century there! It shows that the numerous overlays from ancient Egyptian secret "hieroglyphs," Hermeticism, Cabbala, astrology, numerics, and more, that were made-up, yet taken by many of the time as the truth secretly embedded in the "Book of Thoth," the ancient Tarot.
I've been fascinated by and have derived some insight from these associations, yet have been frustrated at the many contradictory elements between the now many existing systems of these occult associations. I see them as nice to know but not to be taken too seriously.