In Unknown Worlds; or, A Trip to Mystery Land
| First published | 1927 |
|---|---|
| Publisher | Street & Smith Publications, Inc. |
| Format | Paperback |
| Type | Novel |
| Pages | 214 |
| First published | 1927 |
|---|---|
| Publisher | Street & Smith Publications, Inc. |
| Format | Paperback |
| Type | Novel |
| Pages | 214 |