"The Mysterious Mr. Mxyztplk!"
Added by mlopinto
Collected in 2
| Title | Number | Date | Format | |
|---|---|---|---|---|
 | "The Case of the Funny Paper Crimes" #183 | Vol. 1 #183 | 1966-01 | Softcover |
 | Superman | 1971 | Hardcover |
| Title | Number | Date | Format | |
|---|---|---|---|---|
| "The Case of the Funny Paper Crimes" #183 | Vol. 1 #183 | 1966-01 | Softcover |
| Superman | 1971 | Hardcover |