John Howard Sanden founded The Portrait Institute in 1974 and began touring the nation, teaching his ideas and techniques to thousands, who came out to hear him in classes as large as seven hundred at a time. Those who could not come in person studied through one of the national correspondence instructional programs, which he created. In 1979, Sanden launched the National Portrait Seminar, which grew to be the largest art seminar program in America. An annual lecture series at the Art Students League was presented to standing-room-only audiences there for twenty-three years.