DC Special #21 was published by DC Comics on May 1, 1976, as part of a series that began in 1975. E. Nelson Bridwell and John Broome write, and art comes from Curt Swan, Ernie Chan and George Klein. This 68-page issue features Superman, Lois Lane, Hal Jordan, Jimmy Olsen and Perry White, among 11 characters cataloged on VerseDB.