Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6438693TeitlDMHC04_114 - Dr Michael Harrison CollectionLefelSub-groupDisgrifiadColour slides showing sites and buildings in Dr Harrison's classification "Railways - Building & Engineering - 10360".Cyfrwng20 slides. Photo.Delweddaun
