This print/mailer was published to announce Lichtenstein's exhibition at Leo Castelli Gallery, September 28-October 24 1963, not in a numbered edition. The portion of the press run with the Castelli return anddress and exhibition information was printed on the back was folded into quarters and mailed, while others without any printing on the back, usually signed by the artist, were sold or givewn away at Castelli Gallery during the exhibition.