Manly P. Hall (1901 - 1990)

Manly Palmer Hall (18 March 1901 – 29 August 1990) was a Canadian author, lecturer, astrologer, mystic and Freemason. Over his 70-year career he gave thousands of lectures and published over 150 volumes, of which the best known is The Secret Teachings of All Ages (1928). In 1934 he founded the Philosophical Research Society in Los Angeles.