Citations
"L.M.S. Elmington and Cresswell. Signal economy scheme", 1941, GBR/3296/Maps/Maps.RLY.2248, Maps.RLY.2248. Cambridge University Library. |
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"L.M.S. Elmington and Cresswell. Signal economy scheme", 1941, GBR/3296/Maps/Maps.RLY.2248, Maps.RLY.2248. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/266364 Accessed January 24, 2025. |