Nid oes gennych resi chwilio datblygedig. Ychwanegwch un trwy glicio ar y botwm '+ Ychwanegu Rhes'
Rhif Archif
6514560
Disgrifiad
Black and white aerial photograph of Porthmadog taken by the Ordnance Survey on 21st May 1971 at an altitude of 7500 feet. Grid reference SH5639. Print enlargement (c. 20") taken from 9" film roll.
Cofnod Casglu
Ordnance Survey Vertical Aerial Photography Collection
Cyfrwng
Photo.
Cychwynnwr
Ordnance Survey
Dyddiad
1971-05-21