The Mystic Symbol: Mark of the Michigan Mound Builders
During World War II,Henriette Mertzworked as a code-breaker in the U.S. government’s cryptography department. Later, she became a prominent Chicago attorney. Her inquiries into ancient history culminated in the publication of several controversial books during the 1960s and ‘70s, includingPale Ink,The Wine Dark Sea, andAtlantis.Mertz died in 1982, at the age of 73.