| Year | 2006 |
| Date | 13-Oct |
| Volume | 197 |
| Issue | 4,284 |
| Page | 440 |
| Category | Stationary Engine |
| Part | 3 |
| Title | Overhead Valve Engines |
| Author | Colin Pape (France) |
| Notes | Waddon engine at Kew Bridge Steam Museum, Hathorne Davy pump engine, some example engines, horizontal mill engine Agnes by Pollit & Wigzell at Markham Grange, Sissons triple expansion engine, which type of compound? Decision time, keeping things simple |