Citations
Conventional sign card Ordnance Survey scale 1:25,000 or about 2½ inches to 1 mile, 1960, GBR/3296/Maps/CCSA.OS_152_16, OS_152_16. Cambridge University Library. |
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Conventional sign card Ordnance Survey scale 1:25,000 or about 2½ inches to 1 mile, 1960, GBR/3296/Maps/CCSA.OS_152_16, OS_152_16. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243307 Accessed May 07, 2025. |