| Year | 1907 |
| Date | 30-May |
| Volume | 16 |
| Issue | 318 |
| Page | 519 |
| Category | Stationary Engine |
| Part | 5 |
| Title | A Design for a Small Model Undertype Engine |
| Author | Henry Greenly |
| Notes | Pistons and Parts of Motion. Alternative piston design, crossheads, slide bars, connecting rods |