Citations
"Signal Works - Hendreforgan Colliery", 1890, GBR/3296/Maps/Maps.RLY.2506, Maps.RLY.2506. Cambridge University Library. |
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"Signal Works - Hendreforgan Colliery", 1890, GBR/3296/Maps/Maps.RLY.2506, Maps.RLY.2506. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/266649 Accessed January 08, 2025. |