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Amgueddfa Cymru – Museum Wales
A letter from South Wales Electricity Board to Major E.I. David of Powell Duffryn Limited, referring to a copy of a paper by Messrs. Leyburn and Lackey which had been enclosed with the letter (but is not with the letter here). Typed in black ink on off-white, South Wales Electricity Board headed paper. Dated 28th February, 1952. Loose within peach card file with other documents relating to Powell Duffryn Electrical System.
