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The origins of IBM | IBM
The International Time Recording Company - IBM
History of IBM - Wikipedia
IBM's First 100 Years: A Heavily Illustrated Timeline
IBM: The Complete Historical Guide - Products ... - History Tools
International Business Machines Co. Scale - Mecum Auctions
IBM (International Business Machines) - Encyclopedia.com
IBM System/370 Model 148 - Wikipedia
International scope of IBM | IBM
Change and Continuity at IBM: Key Themes in Histories of IBM