1. “Functional economic areas” are multicounty regions, generally centered around third-order central places, and have been suggested by Professor Karl A. Fox as logical spatial units for local economic development analysis and policy formation.
2. See especially W. Isard,Methods of Regional Analysis, ch. 5 and Harvey S. Perloff,Regional Studies at U.S. Universities, (Washington, D.C., Resources for the Future, Inc., 1957).
3. R. B. Andrews, “Mechanics of the Urban Economic Base” a collection of reprints of articles inLand Economics, XXIX–XXXI, 29–31 (May, 1953–February, 1956).
4. Lewis C. Copeland,Methods for Estimating Income Payments in Counties (University of Virginia, Bureau of Population and Economic Research, 1952) contains descriptions of techniques and an excellent bibliography of work up to that period. Since then there have been few methodological developments, but several in regard to data retrieval.
5. For examples and discussion of “convergence” studies see R. Easterlin, “Interregional Differences in Per Capita Income, Population and Total Income, 1840–1950,” National Bureau of Economic Research,Studies in Income and Wealth, XXIV, and G. Borts and J. Stein, “Investment Return as a Measure of Comparative Regional Economic Advantage” in W. Hochwald, ed.,Design of Regional Accounts, (Baltimore, Johns Hopkins University Press, 1961).