Holt_prototype_track-type_tractor_1905.jpg

The second prototype of a track-type tractor built by the Holt Machinery Company of Stockton, California in 1905.

We hope you enjoyed this essay.

Please support America's only magazine of the history of engineering and innovation, and the volunteers that sustain it with a donation to Invention & Technology.

Donate

Help us save
Stay informed - subscribe to our newsletter.
The subscriber's email address.