| Year | 1957 |
| Date | 30-May |
| Volume | 116 |
| Issue | 2,923 |
| Page | 778 |
| Category | Steam |
| Part | 8 |
| Title | The Muncaster steam-engine models |
| Author | Edgar T.Westbury |
| Notes | Governors and control gear. Throttle valves, governor controlling power, accuracy of control, expansion governors |