File:Holt prototype track-type tractor 1905.jpg
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current | 03:53, 25 February 2010 | 1,112 × 904 (487 KB) | Btphelps | {{Information |Description={{en|1=The second prototype of a track-type tractor built by the Holt Machinery Company of Stockton, California in 1905. It is shown on a trial run on Roberts Island, demonstrating its capability at navigating across the peat so |
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