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Abstract
Growth and change have been the keynotes of American manpower throughout its history. Vast increases in the population and labor force, and changes in their composi- tion and capacity to produce, have in a large measure pro- vided the source of America's national strength and the basis for its cultural and material riches.
During the past half century, the American population has doubled. In the past twenty years alone, there has been a gain of nearly 50 million persons. Moreover, the character of economic life has changed radically. One of every three Americans lived on a farm a half-century ago; today, only one in ten lives on a farm. This growth and change continues. By the end of the present decade, the population may approach 210 million, a gain of 30 million over 1960.
