REG BUTLER, Catalogue d’exposition, New York, Curt Valentin Gallery, 1955, 17 X 12 cm, non-paginé, illustrations REG BUTLER, BRUNO CASSINARI, JAN COX, IRVING KRIESBERG, ALTON PICKENS, Catalogue d’exposition, New York, Curt Valentin Gallery, 1953 (10529 EV)
