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Amgueddfa Cymru – Museum Wales
Letter to J.B. Horsley (Electrical Inspector of Mines), regarding the installation of AC motors at Amalgamated Anthracite Co's. collieries. A copy of the letter sent to Mr Horsley typed in black ink on thin, fragile paper. The reply to this letter is 83.184I/25 (4), to which this letter is stapled.
