| Year | 1961 |
| Date | 02-Nov |
| Volume | 125 |
| Issue | 3,147 |
| Page | 540 |
| 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 | Cylinder drain cocks, axlebox lubrication, crosshead feed-water pump. Going ahead with the smaller scale |