| Year | 1941 |
| Date | 25-Dec |
| Volume | 85 |
| Issue | 2,120 |
| Page | 502 |
| Category | Locomotive |
| Part | |
| Title | 1831. A 3 1/2in. Gauge I.C. Engine-driven Locomotive |
| Author | Edgar T.Westbury |
| Notes | Ignition system, relative merits, possibilities of magneto ignition, components for coil ignition system, the contact-breaker |