Abstract
1880: Population, Vol. I, Table 13 1900: Population, Vol. I, Part 1, Table 89 1920: Population, Vol. II, Chapter 6, Table 6 1940: Population, Vol. II, Part 1, Table 36 1950: Population, Vol. II, Part 1, Table 71 1960: Population, Vol. I, Part 1, Table 110 2 The eight regions discussed in this essay are used by Harvey S. Perloff, Edgar S. Dunn, Jr., Eric E. Lampard, and Richard F. Muth: Regions, Resources, and Economic Growth (Baltimore: Johns Hopkins, 1960), p. 6. NEW ENGLAND (NE): Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut. MIDDLE ATLANTIC (MA): New York, New Jersey, Pennsylvania, Delaware, Maryland, District of Columbia. GREAT LAKES (GL): Ohio, Indiana, Illinois, Michigan, Wisconsin. PLAINS (PL): Minnesota, Iowa, Missouri, North and South Dakota, Nebraska, Kansas.
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