Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6438694TeitlDMHC04_115 - Dr Michael Harrison CollectionLefelSub-groupDisgrifiadColour slides showing sites and buildings in Dr Harrison's classification "Railways - Building & Engineering - 10360".Cyfrwng20 slides. Photo.Delweddaun
