| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1948 |
|
Doc Savage, March-April 1948 | Street & Smith Publications, Inc. | MAGAZINE | 4 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1948 |
|
Doc Savage, March-April 1948 | Street & Smith Publications, Inc. | MAGAZINE | 4 |