Soldiers using a Caterpillar tractor during World War I. The tractor, manufactured by Holt Mfg. Co. in Peoria, Illinois and Stockton, California, had a horsepower of 120 and could carry 20 tons of artillery. This photograph was taken on June 26, 1918 and the image number is 111-SC-21322.

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Size: 8475px × 5711px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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