The Secret Sentinel (Secret Service Operator #5, March-April 1937)
| First published | March 1937 |
|---|---|
| Type | Essay |
Publications (1)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| March 1937 | Secret Service Operator #5, March-April 1937 | Popular Publications, Inc. | MAGAZINE | |95 |