| Year | 1949 |
| Date | 14-Apr |
| Volume | 100 |
| Issue | 2,499 |
| Page | 455 |
| Category | Locomotive |
| Part | |
| Title | Twin Sisters. Two 5-in. gauge locomotives, exactly alike externally but very different internally |
| Author | J.I.Austen-Walton |
| Notes | The first rames assmebly (photo by A.Duncan), running board brackets, brake shaft bracket, buffer beams, mark or number, casting or built up |