| Year | 1951 |
| Date | 21-Jun |
| Volume | 104 |
| Issue | 2,613 |
| Page | 807 |
| Category | Locomotive |
| Part | |
| Title | Twin Sisters. Two 5-in. gauge locomotives, exactly alike externally but very different internally |
| Author | J.I.Austen-Walton |
| Notes | Combination levers, union links, valve-spindle guide-block, J.J.Sargent in his Dannevirke New Zealand workshop, haunted by pumps, cylinder castings |