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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6515171
    Disgrifiad
    Preliminary drawings showing the central truss at Porthaml produced by Stanley Jones, undated.
    Enw Casgliad
    SRJC - Stanley R. Jones Collection
    Cyfrwng
    Graphic.
    Cychwynnwr
    Stanley R. Jones
    Dyddiad
    1960 to 2000