Size: 9 x 6 Inch Includes Envelope Superman first appeared in Action Comics #1, a comic book published on 18th April 1938 and is part of the DC Universe, often appearing alongside other superheroes such as Batman and Wonder Woman. This sweet Father's Day card is perfect for the hero in your life. Featuring a cartoon style image of Superman alongside the wording "HAPPY FATHER'S DAY SUPER DAD".