| Year | 1962 |
| Date | 30-Aug |
| Volume | 127 |
| Issue | 3,190 |
| Page | 259 |
| Category | Locomotive |
| Part | |
| Title | "Firefly", a GWR 4500 class 2-6-2 tank engine in 3 1/2, 4 3/4 and 5 in. gauges |
| Author | Martin Evans |
| Notes | Short barrelled pumps for tank engines. Concealing the pump, hand pumps for the two scales of Firefly |