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    Archive Number
    6516809
    Description
    Black and white aerial photograph of Twynllanan, taken by the Ordnance Survey on 7th May 1975, at an altitude of 8,200 feet. Grid reference SN7524. Print enlargement (c. 20") taken from 9" film roll.
    Collection Record
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1975-05-07