Harry Elmer Barnes (June 15, 1889 August 25, 1968) was an American historian who, in his later years, was known for his historical revisionism and Holocaust denial. Barnes taught history at Columbia University from 1918 to 1929. Afterwards, he worked as a freelance writer and occasional adjunct professor at smaller schools. Through his position at Columbia and his prodigious scholarly output, Barnes was once highly regarded as a historian. However, by the end of the 1950s, he had lost credibility because of the major role he played in the inception of the Holocaust denial movement.
