Dr. Yen Sin (Donald E. Keyhoe)
Titles (3)
| # | Title | Author(s) | Year | Type |
|---|---|---|---|---|
| 1 | The Mystery of the Dragon's Shadow | Donald E. Keyhoe | 1936 | |
| 2 | The Mystery of the Golden Skull | Donald E. Keyhoe | 1936 | |
| 3 | The Mystery of the Singing Mummies | Donald E. Keyhoe | 1936 |
| # | Title | Author(s) | Year | Type |
|---|---|---|---|---|
| 1 | The Mystery of the Dragon's Shadow | Donald E. Keyhoe | 1936 | |
| 2 | The Mystery of the Golden Skull | Donald E. Keyhoe | 1936 | |
| 3 | The Mystery of the Singing Mummies | Donald E. Keyhoe | 1936 |