| Year | 1939 |
| Date | 16-Feb |
| Volume | 80 |
| Issue | 1,971 |
| Page | 199 |
| Category | Locomotive |
| Part | |
| Title | Small Locomotive Practice. An Interesting Gauge Conversion Job |
| Author | LBSC |
| Notes | From 3 1/4"g to 3 1/2"g for Hugh Simpson, London and North Western locomotive, photos by C.J.Grose |