| Year | 2004 |
| Date | 05-Mar |
| Volume | 192 |
| Issue | 4,216 |
| Page | 265 |
| Category | Locomotive |
| Part | 5 |
| Title | Penrhos Grange |
| Author | Neville Evans and Simon Bowditch |
| Notes | Valve events and making the weighshaft and eccentrics. Weighshaft, ballbearing eccentrics, the Highland line |