Tractors and Farm Machinery, 1855-1975: Vol. 1: The Agricultrual Tractor, 1955-1950; Vol. 2 Farm Tractors, 1950-1975; Vol. 3 Benjamin Holt & Caterpiller; Vol. 4 The Grain Harvesters; Vol. 5 Wheels of Farm Progress, Vol. 6 Rural America a Century Ago
(United States Dept. Of Agriculture, Beltsville, MD. 1954). Thick Quarto. Published 1954-1984 and here bound in one large volume of 946 pages with details of the major advances in farm equipment and techniques. Today only about 4 percent of the American population live on farms, yet there is an increased..... More