TABLE 8 FARM MACHINERY AND FARM LABOR PRODUCTIVITY, 1910-1960 Inventory Value of Farm Implements and Machinery Index of Output Millions per Man-hour (1940=100) of Constant Index 1954 (1940= Year Farm Total Dollars 100) 1960 319 17,832 309 1950 169 13,952 242 1940 100 5,763 00oo 1930 79 6,475 112 1920 73 4,342 75 1910 67 2,674 46 Source: Raw Materials in the U.S. Economy, 1900-1966, p. 52, Table 20. National Income by Source As farm production increased, workers were freed (or forced by necessity) to pursue other activities. Income originating in industries other than agriculture increased substantially and gains in manufacturing were particularly impressive as is shown in Table 9.