| Year | 1902 |
| Date | 13-Jan |
| Volume | 6 |
| Issue | 73 |
| Page | 228 |
| Category | Nautical |
| Part | |
| Title | Design for a Model Launch Engine |
| Author | Geo. W.Halpin |
| Notes | Model double-cylinder, rocking shaft & levers, plans & elevations, standards & cross bars, valve actuating crank, cylinder, connecting-rods, crankshaft, valve levers |