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Rhif Catalog Cofnod Casgliad Disgrifiad Canolig
624075 Ordnance Survey Vertical Aerial Photography Collection Ordnance Survey books (2) and paper maps and overlays indicating flight paths. Unsorted.
641133 Ordnance Survey Vertical Aerial Photography Collection Ordnance Survey large print collection comprising black and white enlargements (c.20") taken from 9" film rolls. Filed in alphabetical order according to featured town, community or feature. ffotograff