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Amgueddfa Cymru – Museum Wales
O.S. map Glamorgan Sheet XV.II, Showing Ysgubor-wen Colliery, 1914 Scale : 1:2500
O.S.Map Edition of 1919. Glamorgan Sheet XI.11. Scale - 1/2500 being 25.344 inches to a statute mile or 208.33 feet to one inch. - Sian Williams
