Volume 1, #250. "The Deadly Number Game!"
DC Comics. July, 1973.
Writer(s): Frank Robbins
Artist(s): Irv Novick, Dick Giordano, Dave Cockrum, Neal Adams
Notes:
Backup story "Robin: Return Of The Flying Grayson" by Elliot S. Maggin, Irv Novick, Frank McLaughlin
Cover Art: Dick Giordano