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Amgueddfa Cymru – Museum Wales
Glamorgan Sheet XXVI.4, showing Ogmore Vale including Tynewydd and Aber Collieries, Wyndham Pit and GWR Ogmore Branch. Map size 25". Second Edition 1899, surveyed in 1875, revised in 1897. Scale 1/2500 bring 25.344 inches to a statute mile or 208.33 feet to one inch.
