Bullard, E John. Mary Cassatt: oils and pastels / by E. John Bullard. - New York : Watson-Guptill, 1972. - 87 p. : ill. Includes bibliographical references. ISBN: 0823005690 LCCN: 70190524 Subjects--Topical Terms: Cassatt, Mary, 1844-1926. Dewey Class. No.: 759.13