| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1940 |
|
Doc Savage, March 1940 | Street & Smith Publications, Inc. | MAGAZINE | 6 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1940 |
|
Doc Savage, March 1940 | Street & Smith Publications, Inc. | MAGAZINE | 6 |