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Amgueddfa Cymru – Museum Wales
Pre-printed cost sheets stapled together. Printed in black and red ink on cream, lined paper with handwritten details in black and red ink. 5 cost sheets, plus cover page. Guest Keen & Nettlefolds Limited., Cardiff Works, cost accounts for 13 weeks ended September 28th, 1929. Costs for plate mills, slabbing mill, Siemens steel furnaces and blast furnaces.
