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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    SJSHC_01
    Disgrifiad
    A group of large scale maps, plans and drawings showing a number of metal mines, mainly in North Ceredigion.
    Enw Casgliad
    SJSHC - Simon J. S. Hughes Collection
    Cyfrwng
    2 plan press drawers, paper, graphic, cartographic.
    Cychwynnwr
    Simon J. S. Hughes
    Dyddiad
    1976-2020