Who was the leading American Freethinker born who used the pseudonym M. Bible?
Henry M. Tichenor:  In the realm of opposition to religion, he has been ranked beside Clarence Darrow and Madalyn Murray O'Hair as a leading American freethinker of the twentieth century. Madalyn Murray O'Hair: Madalyn Murray O'Hair ("née" Mays; April 13, 1919 – September 29, 1995), who also used multiple pseudonyms (her most preferred being M. Bible), was an American activist, founder of American Atheists, and the organization's president from 1963 to 1986.
Madalyn Murray O'Hair