| Year | 1940 |
| Date | 03-Oct |
| Volume | 83 |
| Issue | 2,056 |
| Page | 267 |
| Category | Railway |
| Part | 2 |
| Title | Railway Signals. Standard Semaphore Types used in Pre-grouping Days |
| Author | O.S.Nock |
| Notes | Great Central Railway. General arrangement, a typical bracket signal, details of some of the more important fittings, working bracket signals |