SF Encyclopedia Picture Gallery
Walter M Miller Jr. A Canticle for Leibowitz (Philadelphia, Pennsylvania: J B Lippincott, 1959) [book dated 1960, copyrighted 1959, with copies on sale from October 1959: two covers issued, the second by George Sottung, the first by the illustrator here credited: hb/Milton Glaser]
Image courtesy of Clute Science Fiction Library at Telluride