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Amgueddfa Cymru – Museum Wales
Two letters regarding Rar-el-Maden ore and Ouenza ore. Letters attached with a paperclip. One letter from Wm H. Muller & Co. (London) Ltd. to Messrs British (G.K.B.) Iron & Steel Company, typed on company headed paper. Dated 23rd November 1931. Also a letter from Cromwell & Murray Inc., typed on white paper. Dated 23rd June 1931.
