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    Archive Number
    6516451
    Description
    Black and white aerial photograph of Drefach, taken by the Ordnance Survey on 13th June 1974 at an altitude of 7,700 feet. Grid reference SN3539. Print enlargement (c. 20") taken from 9" film roll.
    Collection Name
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1974-06-13