| Year | 1921 |
| Date | 06-Jan |
| Volume | 44 |
| Issue | 1,028 |
| Page | 14 |
| Category | Railway |
| Part | 11 |
| Title | Model Railway and Locomotive Matters |
| Author | "Crankpin" |
| Notes | Outside Cylinders for Walschaerts' Gear Model 2 1/2-in. Gauge Locomotives. Standard cylinders for American locomotives, 2 1/2"g. L.S.W.R. loco with Walschaerts valve gear |