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Amgueddfa Cymru – Museum Wales
Ten letters, a memorandum and a test report sheet, attached with a paperclip. Correspondence regarding the benefication of flue dust. Ten letters typed on cream paper; one memorandum, typed on company headed paper (Guest Keen Baldwins Iron & Steel Company), and a test report sheet from East Moors works, printed in black ink with typed details. Letters date between June and August 1943.
