• Cymraeg
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    Hierarchy
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    Archive Number
    6044873
    Description
    Early to mid 20th Century, Ordnance Survey, 25" drawn revision maps, covering nearly all of Wales, except for most of Montgomeryshire.
    Collection Record
    25' Second Edition O.S. Master Maps
    Medium
    67 drawers. Cartographic.
    Originator
    Ordnance Survey
    Date
    1904 to 1943