Imprint varies: Sparta, Ill., July 1955-Dec. 1971; New York, N.Y., Jan. 1972-Sept. 1986.
Publisher varies: National Comics Publications, Mar.-Apr. 1947-<Oct. 1961>; National Periodical Publications, <Jan. 1962>-Feb. 1977; DC Comics, Mar. 1977-Sept. 1986.
Writers include: Cary Bates, Elliot Maggin, Denny O'Neil, Martin Pasko.
Artists include: Curt Swan, illustrator; Bob Oksner, illustrator; Murphy Anderson, illustrator; Tex Blaisdell, illustrator; Adrienne Roy, colorist; Jerry Serpe, colorist; Gene D'Angelo, colorist; Ben Oda, letterer; Milton Snappin, letterer; John J. Hill, letterer.
Title from indicia.