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    Archive Number
    6516456
    Description
    Black and white aerial photograph of Efailwen, taken by the Ordnance Survey on 14th May 1973 at an altitude of 7,600 feet. Grid reference SN1325. Print enlargement (c. 20") taken from 9" film roll.
    Collection Record
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1973-05-14