Citations
"A general guide to the Four-Position Train Identification system", 1961, GBR/3296/Maps/Maps.RLY.Z.3 (36), Maps.RLY.Z.3 (36). Cambridge University Library. |
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"A general guide to the Four-Position Train Identification system", 1961, GBR/3296/Maps/Maps.RLY.Z.3 (36), Maps.RLY.Z.3 (36). Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/268243 Accessed January 14, 2025. |