Holt Tractors
In the late 1800s, Benjamin Holt began manufacturing self-levelling combine for use on hillsides in the western United States. Holt began building steam tractors and began experimenting with crawler tracks. The first tracked Holt was tested in 1904, and a commentator is reported to have said, "She crawls along like a caterpillar", providing the inspiration for the trademark. In 1925, Holt merged with rival Best to form the Caterpillar Tractor Company.
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Holt Tractors
| Holt 2-Ton | Power: 31 hp | Date of manufacture : 1921 - 1925 |
| Holt 5-Ton | Power: 40 hp | Date of manufacture : 1919 - 1925 |
| Holt 10-Ton | Power: 61 hp | Date of manufacture : 1918 - 1925 |