sentences:  Over his career, Janson consulted on the "Time–Life Library of Art"; was president of the College Art Association, editor of the "Art Bulletin", and founding member and President of the Renaissance Society of America.He also wrote books on art for young people, some in collaboration with his wife.Janson's signature contribution to the discipline of art history, specifically to the teaching of art history, is his survey text entitled simply "History of Art," which was first published in 1962 and has since become the standard by which current art history textbooks are measured.