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Holt Steamer No. 77, the second prototype of a crawler-track-type tractor built by the Holt Machiner

Holt Steamer No. 77, the second prototype of a crawler-track-type tractor built by the Holt Machinery Company, 1905.


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#tractors #engineering #mechanical engineering #history #automotive engineering 
History of Engineering and Technology@History of Engineering and Technology
Mon, 05 Jun 2017 10:57:56
John Schafer with wife Neta Smith Schafer and daughter Bernice beside 1922 Buick Six automobile at r

John Schafer with wife Neta Smith Schafer and daughter Bernice beside 1922 Buick Six automobile at railroad logging camp, circa 1924.


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History of Engineering and Technology@History of Engineering and Technology
Mon, 29 Jan 2018 12:48:19
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