Archive6149548Title915007_03 - RCAHMW Black and White Oblique Aerial PhotographsLevelItemDescriptionRCAHMW Black and white oblique aerial photograph of Alwen Dam, Cerrigydrudion, taken on 26/02/1991 by CR MussonMediumPhoto.Imagesn
Archive6149547Title915007_04 - RCAHMW Black and White Oblique Aerial PhotographsLevelItemDescriptionRCAHMW Black and white oblique aerial photograph of Alwen Dam, Cerrigydrudion, taken on 26/02/1991 by CR MussonMediumPhoto.Imagesn
Archive6027869Title9500139_33 - NMR Site FilesLevelItemDescriptionPhoto survey of dam at Alwen Water Treatment Works, Cerrigydruidion, consisting of two black and white prints. Negatives held.MediumPhoto.Imagesn
Archive6149546Title91_CS_0123 - RCAHMW Colour Oblique Aerial PhotographsLevelItemDescriptionRCAHMW colour slide oblique aerial photograph of Alwen Dam, Cerrigydrudion, taken on 26/02/1991 by CR MussonMediumPhoto.Imagesn
