In the early 1960s, Chan Thomas wrote a book titled The Adam and Eve Story and attempted to have it published by Emerson House in Los Angeles. Soon after publishing the full issue, the CIA classified his book for 50 years. An FOIA lawsuit was filed against the CIA to release the book. In 2013, the CIA released a "cleansed" version of the original book (50 pages out of 240 original pages).
Why was this book classified?
https://www.cia.gov/readingroom/docs/CIA-RDP79B00752A000300070001-8.pdf
Yes, and a wonderful overview you’ve written! The New Age stamp vs Historical is probably due to his translations of Sumerian Cuneiform relating to the Annunaki(?). I had heard in the past that mainstream Historians, WHO MAY AS WELL BE LABELED DS (here)...can’t have anyone with a mind straying from the narrative. -My take