The McCormick-Deering 10-20 TracTracTor was a kerosene powered crawler tractor built by the International Harvester company from 1928 to 1930 in Chicago, Illinois. For Company history, see International Harvester. ModelThe McCormick-Deering 10-20 TracTracTor, International Harvester's first production crawler, was basically a tracked conversion of the 10-20 wheel …
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