The Secret of the Old Mill
| Publisher | Grosset & Dunlap |
| Series | Hardy Boys Mystery Stories |
| Format | Hardback |
| Language | English |
| Location | New York |
| Copyright | 1927 |
| Pages / Font | 212 pages |
Added by jlkrien
| Publisher | Grosset & Dunlap |
| Series | Hardy Boys Mystery Stories |
| Format | Hardback |
| Language | English |
| Location | New York |
| Copyright | 1927 |
| Pages / Font | 212 pages |