"The Monster Who Unmasked Superman!" #431
| Series | Action Comics |
| Number | Vol. 1 #431 |
| Publisher | DC Comics, National Periodical Publications, Inc. |
| Date | 1974-01 |
| Type | Comic Book, Softcover |
| Language | English |
| Cover Artist | Nick Cardy |
| Editor | Julius Schwartz, E. Nelson Bridwell |
| Inker | Murphy Anderson, Dick Giordano |
| Penciler | Curt Swan, Dick Dillin |
| Writer | Cary Bates, Elliot S. Maggin |
| Genre | Superhero |
| Published in | New York |
| Pages | 32 |
| Characters | Superman (Kal-El)(Earth 1), Green Arrow (Oliver Queen)(Earth 1) |
| Story Location | 1973; Metropolis, 420th Century (Mentioned only), Prehistoric Era, Timestream, Star City |
Added by mlopinto