From the pages of an old Engineers and Engines Magazine come some fascinating California machines. The first engine is Steam Traction Engine #1, made by Holt, and the one below is the second crawler made by Holt in 1904. Holt was building big traction engines for farm, forests, and industry, and began experimenting with tracks in order to reduce the size of his machines. Holt crawlers were used extensively in Europe during WWI. Holt and Best merged in the 1920's to form the Caterpillar company. Click Here, and Here to read articles about Benjamin Holt.
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