| Year | 1907 |
| Date | 16-May |
| Volume | 16 |
| Issue | 316 |
| Page | 468 |
| Category | Stationary Engine |
| Part | 4 |
| Title | A Design for a Small Model Undertype Engine |
| Author | Henry Greenly |
| Notes | Steam Ports Proportions, Valves, and Valve Spindles. Low pressure steam chest & ports, cylinder covers, valve & valve spindles |