| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1948 |
|
Doc Savage, May-June 1948 | Street & Smith Publications, Inc. | MAGAZINE | 140 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1948 |
|
Doc Savage, May-June 1948 | Street & Smith Publications, Inc. | MAGAZINE | 140 |