Saul Steinberg At left: The New Yorker cover of July 4, 1964 is in the show as The American Sphinx, 23 x 14.5. John Updike notes a catlike sphinx labeled Vox Populi delivering a rebus in a talk balloon where a flag, a heart, a snake, a pair of scales, a harp, a handshake, and a cornucopia add up to a mystical distillation of Americana... Below right is Riverhead Duck, 1986, 20 x 15. Dr. Marco ...