Bishop Irving S. Cooper was an American lecturer for the Theosophical Society in America and a bishop in the Liberal Catholic Church. Irving Steiger Cooper was born in Santa Barbara, California on March 16, 1882 to parents Augustus Steiger Cooper and Mary Felds Cooper. A brilliant student, he was awarded a degree from the University of California. In 1927 he married Susan L. Warfield, who had been a member of the American Theosophical Society since September 28, 1922. Soon after he completed his education, Cooper was introduced to Theosophy. He was admitted as a "National" member [member-at-large] of the American Theosophical Society on February 24, 1904, recommended by F. M. Willis and Jessie C. Brodie. "Early in his theosophical service he went to Adyar, and the story is told that having established himself in his own quarters, he presented himself one morning to Mr. C. W. Leadbeater with his typewriter and the announcement: 'Here I am. Set me to work.' And a competent, useful assistant he proved to be to his great friend and teacher, Mr. Leadbeater."

After returning to the United States, he became a National Lecturer who was much in demand. He wrote several books intended to introduce new seekers to the concepts of Theosophy. In 1909 he established a National Slum and Prison Improvement League of the Theosophical Order of Service. (Theosophy Wiki)

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