| Release: | Feb 1968 |
| Cover: | Feb 1968 |
The Case Of The Lethal Letters
| Release: | Feb 1968 |
| Cover: | Feb 1968 |
| Artist | Ross Andru |
| Cover Artist | Neal Adams |
| Superman | Kal-El / Clark Kent |
| Age | Silver Age |
|---|---|
| Format | Comic |
| Series Group | Superman |
| Genre | Action | Adventure | Super-Heroes |
| No. of Pages | 32 |
| Country | USA |
| Language | English |