| Year | 1993 |
| Date | 30-Jul |
| Volume | 171 |
| Issue | 3,950 |
| Page | 144 |
| Category | On Shed |
| Part | 15 |
| Title | Marquess. 3 1/2in. gauge Thompson 2-6-0 |
| Author | Martin Evans |
| Notes | Lubricator, Backhead Fittings and Platework. Describes several more important components. Safety valves, blowdown valves, check or clack valves |