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    Archive Number
    6514558
    Description
    Black and white aerial photograph of Porthmadog taken by the Ordnance Survey on 9th June 1968 at an altitude of 7500 feet. Grid reference SH5638. Print enlargement (c. 20") taken from 9" film roll.
    Collection Record
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1968-06-09