Sir Isaac Lowthian Bell, knight metallurgical chemist, President of the Institution of Mechanical Engineers: letters to RM Middleton 1876-91 (Acc 1018)
Walter Raleigh Browne, engineer and secretary of the Institution of Mechanical Engineers (addnl): collected publications containing supporting corresp and papers 1879-84 (Acc 1021)
Denis Ralph Cooper, chief engineer to the Royal Mint: papers incl material rel to war service and to Minting Equipment Ltd 1940-97 (Acc 1028)
Imperial Chemical Industries Ltd, Billingham (addnl): blueprints rel to process plant 1918-58 (Acc 1029)
D Napier & Son Ltd, motor car and aircraft engine manufacturers, Acton (addnl): papers, mainly engineering drawings and technical reports 1948-67 (Acc 1020)
Institution of Mechanical Engineers, Eastern branch: minutes and papers 1962-92 (Acc 1022)
Institution of Mechanical Engineers, Western branch: minutes and attendance books 1934-59 (Acc 1019)
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