Book excerpt: Although much has been written about elite Philadelphians, only in recent decades have historians paid attention to the Jews and working-class blacks, the immigrant Irish, Italians, and Poles who settled in the city and gave such sections as Moyamensing, Southwark, South Philadelphia, and Kensington their vitality. In this classic of social and ethnic history, the authors draw on census schedules, court records, city directories, and tax records as well as newspaper files and other sources to give a picture of the ways in which these less-privileged groups of Philadelphians lived. What emerges is a picture of Philadelphia radically different from the conventional portrait of a staid old city.