Holt Tractor Development & History, Rotary Engine Roundup, Sargent Expansion Eng
USD 26.18 USD
Specifications
| Country Of Origin | United States |
| Original/Reproduction | Original |
| Theme | Agriculture |
(Roundup of Rotary Engines 3 pages). The Sargent Expansion Gas Engine – 1904 (1 page). Benjamin Holt’s Steam Power – One Man – Jesse Hardy of San Leandro, CA (9 pages, mainly with photos of various Holt traction engines).