Volume 1, #398. "The Pied Piper Of Steel!"
DC Comics. March, 1971.
Writer(s): Leo Dorfman
Artist(s): Curt Swan, Murphy Anderson
Notes:
Backup story "Untold Tales Of The Fortress: Spawn Of The Unknown" by Leo Dorfman, Curt Swan, Murphy Anderson
Cover Art: Neal Adams, Dick Giordano