Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6142780Teitl945093_55 - RCAHMW Black and White Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW Black and white oblique aerial photograph of Sarn Helen, Pen-y-stryd To Dolgain, Trawsfynydd, taken by C.R. Musson, 17/04/94CyfrwngPhoto.DelweddaunRhif Archif6142779Teitl945185_57 - RCAHMW Black and White Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW Black and white oblique aerial photograph of Sarn Helen, Pen-y-stryd To Dolgain, Trawsfynydd, taken by C.R. Musson, 09/10/94CyfrwngPhoto.DelweddaunRhif Archif6142778Teitl945185_59 - RCAHMW Black and White Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW Black and white oblique aerial photograph of Sarn Helen, Pen-y-stryd To Dolgain, Trawsfynydd, taken by C.R. Musson, 09/10/94CyfrwngPhoto.DelweddaunRhif Archif6142774Teitl94_CS_0696 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Sarn Helen, Pen-y-stryd To Dolgain, Trawsfynydd, taken by C.R. Musson, 17/04/94CyfrwngPhoto.DelweddaunRhif Archif6142785Teitl94_CS_0697 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Sarn Helen, Pen-y-stryd To Dolgain, Trawsfynydd, taken by C.R. Musson, 17/04/94CyfrwngPhoto.DelweddaunRhif Archif6142782Teitl94_CS_0698 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Sarn Helen from Pen-y-stryd to Dolgain, Trawsfynydd, taken by C.R. Musson, 17/04/94CyfrwngPhoto.DelweddaunRhif Archif6142781Teitl94_CS_0699 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Sarn Helen from Pen-y-stryd to Dolgain, Trawsfynydd, taken by C.R. Musson, 17/04/94CyfrwngPhoto.DelweddaunRhif Archif6142783Teitl94_CS_1846 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Sarn Helen, Pen-y-stryd To Dolgain, Trawsfynydd, taken by C.R. Musson, 09/10/94CyfrwngPhoto.DelweddaunRhif Archif6142784Teitl94_CS_1848 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Sarn Helen, Pen-y-stryd To Dolgain, Trawsfynydd, taken by C.R. Musson, 09/10/94CyfrwngPhoto.DelweddaunRhif Archif6064340Teitl965066_49 - RCAHMW Black and White Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW black and white oblique aerial photograph of Sarn Helen (Pen-y-stryd to Dolgain), taken by C R Musson, 06/05/1996.CyfrwngPhoto.Delweddaun