1. The increasing incidence of two-income families among whites is partially responsible for the downward trend in relative black family incomes. See Charles Brown,“The Federal Attack on Labor Market Discrimination,” National Bureau of Economic Research Working Paper no. 669, pp. 2–14, for a discussion of this question.
2. John Reid, “Black America in the 1980s,”Population Bulletin (December 1982), pp. 24–5.
3. Cited in Christopher Jencks,“ Discrimination and Thomas Sowell,”New York Review of Books (March 3, 1983), p.36.
4. Occupational figures were taken from Table 55 ofCurrent Population Reports, Series P-60, no. 132, U.S. Bureau of the Census. These figures refer to people 18 years old and over as of March 1981; occupation was recorded for all who worked during the 1980 calendar year.
5. E. R. Shipp,“ ’63 Marcher Sees Gains but a ‘Long Way to Travel,’”New York Times (August 28, 1983), p.30.