| Year | 2022 |
| Date | 01-Jul |
| Volume | 229 |
| Issue | 4,694 |
| Page | 100 |
| Category | Locomotive |
| Part | 10 |
| Title | William Spence Locomotive for 7 1/4in. Gauge |
| Author | Cliff Almond |
| Notes | Continues his description of a potential narrow gauge 0-4-0T for 7 1/4 inch gauge. History of the Guinness Railway, general arrangement, making a start, entrance to the spiral tunnel, Spence 0-4-0T No 13 - Narrow Gauge Museum Tywyn, the boiler, design process, Sweet William boiler, Guinness boiler |