The Seven-Oaks Tunnel Enigma
| First published | November 1913 |
|---|---|
| Type | Short Fiction |
| Length | Short Story |
| Series | Magnum, Scientific Detective |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| November 1913 |
|
The Blue Book Magazine, November 1913 | The Story-Press Corporation | MAGAZINE | 33 |