Citations
Papers on War Office copper plates at the Ordnance Survey and their destruction , 1953, GBR/3296/Maps/CCSA.IM_446_3, IM_446_3. Cambridge University Library. |
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Papers on War Office copper plates at the Ordnance Survey and their destruction , 1953, GBR/3296/Maps/CCSA.IM_446_3, IM_446_3. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239560 Accessed May 15, 2025. |