<P> Hapgood married Tamsin Hughes in 1941 but divorced in 1955 . He was struck by a car in Greenfield, Massachusetts, and died on December 21, 1982 . </P> <P> While at Springfield College, a student's question about the Lost Continent of Mu prompted a class project to investigate the lost continent of Atlantis, leading Hapgood to investigate possible ways that massive earth changes could occur and exposing him to the literature of Hugh Auchincloss Brown . </P> <P> In 1958, Hapgood published The Earth's Shifting Crust which denied the existence of continental drift and featured a foreword by Albert Einstein . In Maps of the Ancient Sea Kings (1966) and The Path of the Pole (1970), Hapgood proposed the hypothesis that the Earth's axis has shifted numerous times during geological history . The Path of the Pole was meant as a replacement for The Earth's Shifting Crust after corrections were suggested to him . Hapgood writes in Voices of Spirit (1975): "In later discussions we discussed the theories of my book' Earth's Shifting Crust', and he (Einstein) suggested that one of them was wrong; as a result of this I revised my book, which subsequently was republished as' The Path of the Pole' . My own further research confirmed the truth of his observation, which involved technicalities of geophysics ." </P> <P> In Maps of the Ancient Sea Kings he supported the suggestion made by Arlington Mallery that a part of the Piri Reis Map was a depiction of the area of Antarctica known as Queen Maud Land . He used this to propose that a 15 degree pole shift occurred around 9,600 BCE (approx . 11,600 years ago) and that a part of the Antarctic was ice - free at that time, and that an ice - age civilization could have mapped the coast . He concludes that "Antarctica was mapped when these parts were free of ice", taking that view that an Antarctic warm period coincided with the last ice age in the Northern hemisphere, and that the Piri Reis and other maps were based on "ancient" maps derived from ice - age originals . Later research concerning the paleoclimatology and ice sheets of Antarctica have completely discredited the interpretations by Hapgood that an Antarctic warm period coincided with the last glacial period in the Northern hemisphere and any part of it had been ice - free at and prior to 9,600 BCE (approx . 11,600 years ago). </P>

Who wrote the book the earths shifting crust
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