| Year | 1946 |
| Date | 19-Sep |
| Volume | 95 |
| Issue | 2,367 |
| Page | 292 |
| Category | Railway |
| Part | 9 |
| Title | Railway Interlocking Frames. F.W. Webb's frame, L. & N.W.R. (Part 2) |
| Author | O.S.Nock |
| Notes | L. & N.W.R.-type locking frame in Swansea No. 1 box (photo courtesy L.M. & S.R.), L. & N.W.R. frame with tappet locking |