![](http://www.alamy.com/thumbs/6/0497B533-F830-4E86-8C34-41717326F8D7/2RCG3WJ.jpg)
Tractor being used to pull a truck off a broken bridge during the Trans-Continental Motor Convoy. This photograph was taken on August 15, 1919, 31 miles west of Green River, Wyoming. The tractor was initially unloaded from a Mack Truck before being used for this purpose.
Size: 8448px × 5739px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No
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