Vernon E. Clark was born August 29, 1911, in Baltimore, Maryland. He studied art at the Maryland Institute of Art and at Columbia University Teachers College, and graduated from Columbia University. He practiced as a clinical psychologist in the U.S. Army, at Downey Veterans Hospital, and, after 1950, from his home.
In 1927, Clark became interested in astrology and joined the American Federation of Astrology in 1959. He served as a trustee of the American Federation of Astrologers Building Fund and, in 1958, was the first American to win the Gold Medal of the Faculty of Astrological Studies in London. Clark is remembered for the blind trial experiments of natal chart interpretation that he conducted from 1959 to 1961, which generally supported the thesis that natal horoscopes are potentially indicative of the life circumstances of the natives. He died on November 6, 1967, in Evanston, Illinois.