Caption: 1916 12 Caterpillar tractor, manufactured by Holt Mfg. Co., Peoria, IL and Stockton, CA, served as the basis for the design of the 2 1/2 ton artillery tractor (Model T-13) used during World War I. This photograph is restricted for official use only.

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Size: 8506px × 5768px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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