Human Sexual Response
William Masters was born in Cleveland, Ohio on December 27, 1915. He was a member of Alpha Delta Phi, and became a faculty member at Washington University in St. Louis. Masters met Johnson in 1957 when he hired her as a research assistant to undertake a comprehensive study of human sexuality. Masters divorced his first wife to marry Johnson in 1971. They divorced two decades later, largely bringing their joint research to an end. Masters died in Tucson, Arizona on February 16, 2001.