This work makes extensive use of seven well-developed historical case studies describing the evolution of public old-age security in industrial nations (Germany, United Kingdom, Sweden, and the United States) and developing nations (Brazil, Nigeria, and India). The authors focus on specifying contexts in which general theoretical perspectives can be used to account for these developments. One of the few studies which integrates historical and quantitative data, this accessible work will prove helpful to students and researchers of the welfare state, aging policy, and comparative sociology.