Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6246989Teitl812369 - NMR Site FilesLefelItemDisgrifiadBridgeCyfrwngPhoto.DelweddaunRhif Archif6289272Teitl812370 - NMR Site FilesLefelItemDisgrifiadBridge and embankmentCyfrwngPhoto.DelweddaunRhif Archif6052821TeitlNMR Site FilesLefelBatchDisgrifiad2 black and white prints showing a bridge and embankment on the Plynlimon and Hafan Tramway.CyfrwngPhoto.Delweddaun
