Erich von Däniken is arguably the most widely read and most-copied nonfiction author in the world. He published his first (and best-known) book, Chariots of the Gods, in 1968.The worldwide best-seller and was followed by 32 more books, including The Eyes of the Sphinx, Twilight of the Gods, History Is Wrong, Evidence of the Gods, and Odyssey of the Gods.
https://www.amazon.com/Chariots-Gods-Erich-Von-Daniken/dp/0425074811

