Ethnic Differences, first published in 1989, explores how and why the Irish, Italians, Jews, and blacks of Providence, Rhode Island differed in their schooling and economic success. Drawing on evidence from thousands of students records of public, Catholic, and private schools, as well as on census manuscripts, city directories, and other sources, the book offers an integrated study of American ethnicity, education, and social structure. Joel Perlmann examines the extent to which differing career patterns, and reconsiders the relation between ethnicity and social class.