| Year | 1941 |
| Date | 02-Jan |
| Volume | 84 |
| Issue | 2,069 |
| Page | 16 |
| Category | Railway |
| Part | 8 |
| Title | Railway Signals. Standard Semaphore Types used in Pre-grouping Days |
| Author | O.S.Nock |
| Notes | Great Western Railway. (Part 2). An interesting example of bracket signal construction |