Between 1965 and the end of the century, welfare—that is, Aid to Families with Dependent Children (AFDC)—expanded dramatically; came under attack from conservatives, libertarians, and liberals; and then, in the 1990s, was virtually eliminated as a federal program through legislation that had broad, bipartisan support. Throughout that process of growth and declension, social scientists played central roles in shaping perceptions of welfare, most significantly by examining the impact of welfare on the work ethic, on family structure, on gender relations, on poverty, and on inner-city, black communities. This is an enormously complex story, and I have engaged it by focusing on four influential texts, each by a prominent social scientist: Daniel P. Moynihan's The Negro Family: The Case for National Action (1965), otherwise known as the Moynihan Report; Charles Murray's Losing Ground: American Social Policy, 1950–1980 (1982); Martin Anderson's Welfare: The Political Economy of Welfare Reform in the United States (1978); and David T. Ellwood's Poor Support: Poverty in the American Family (1988). Although this approach inevitably oversimplifies somewhat, it also makes possible a more intensive critical reading of these key historical documents.