| Year | 1993 |
| Date | 03-Dec |
| Volume | 171 |
| Issue | 3,958 |
| Page | 687 |
| Category | Countryman's Steam |
| Part | |
| Title | Starting Valves and Valve Gears on Road Engines |
| Author | John Haining |
| Notes | Looks at various aspects of road locomotives, the subjects of readers' queries. Mr Gee, Firth valve gear |