| Release: | Jul 1940 |
| Cover: | Jul 1940 |
Professor's Cobalt's Clinic
| Release: | Jul 1940 |
| Cover: | Jul 1940 |
Doctors Cobalt and Grafton have set up a clinic, promising to cure infantile paralysis. Suspecting foul play, the Daily Planet refuses to publish their ads. Clark and Lois soon investigate, and learn that they are peddling sugar. Can Superman shut down the operation and get their "patients" proper medical care in time?
| Writer | Gardner Fox, Jerry Siegel, Ken Fitch |
| Artist | Sheldon Moldoff, Chad Grothkopf, Fred Guardineer, Bernard Baily |
| Cover Artist | Wayne Boring |
| Penciller | Paul Lauretta, Paul Cassidy |
| Inker | Joe Shuster |
| Letterer | Bernard Baily |
| Editor | Whitney Ellsworth, Murray Boltinoff |
| Superman | Kal-El / Clark Kent |
| Lois Lane | |
| George Taylor |
| Age | Golden Age |
|---|---|
| Format | Comic |
| Series Group | Superman |
| Genre | Action | Adventure | Super-Heroes |
| Country | USA |
| Language | English |