| Year | 1949 |
| Date | 09-Jun |
| Volume | 100 |
| Issue | 2,507 |
| Page | 695 |
| Category | Locomotive |
| Part | |
| Title | Twin Sisters. Two 5-in. gauge locomotives, exactly alike externally but very different internally |
| Author | J.I.Austen-Walton |
| Notes | A group of wheels, wheels, balance weights, crankpins |