| Year | 1941 |
| Date | 08-May |
| Volume | 84 |
| Issue | 2,087 |
| Page | 371 |
| Category | Railway |
| Part | 17 |
| Title | Railway Signals. Standard Semaphore Types used in Pre-grouping Days |
| Author | O.S.Nock |
| Notes | Supplementary Notes mainly on Southern Lines. A group of signals on the L. & S.W.R. showing shades fitted over the green glasses, London, Chatham and Dover type semaphore signal with banner type distant arm below (photos by T.S.Lascelles), Caledonian semaphore signal with grass-green glass for "clear" (photo by E.R.Wethersett), down outer home signal, Verney Junction, Met. Railway (photo by A.W.V.Mace) |