| Year | 1930 |
| Date | 24-Apr |
| Volume | 62 |
| Issue | 1,511 |
| Page | 387 |
| Category | Nautical |
| Part | |
| Title | A Model Compound Marine Engine |
| Author | Geo. Gentry |
| Notes | Built by F.Krienke. End view, details of cylinders, three-quarter and front view, plan view, lathe accessories applicable to old type Drummond 3 1/2" lathe, high speed type horizontal engine |