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Amgueddfa Cymru – Museum Wales
Vivian incline 1886 Bridge over Padarn Railway 1900. caernarvon Dinorwic slate quarries. Details in pencil taken from C.E.G.B survey maps. Details in ink taken from O.S. Maps circa 1914 surveyed in 1888, scale 1/25000 all heights are in metres P.G.H Aug 1973
