Historical perspectives on the American ethnic group, by O. Handlin.--Religious group conflict, by W. Herberg.--The two worlds of race: a historical view, by J. H. Franklin.--Membership in social groupings, by A. Campbell [and others]--The way of the ethnic in politics, by R. E. Lane.--The political socialization of the American Negro, by D. Marvick.--American Jews and the Presidential vote, by L. H. Fuchs.--The Negro voter in northern industrial cities, by O. Glantz.--Catholic voters and the Democratic Party, by S. Greer.--Bosses, machines, and ethnic politics, by E. E. Cornwell.--Two Negro politicians: an interpretation, by J. Q. Wilson.--The ex-plebes, by R. A. Dahl.--The new men, by R. A. Dahl.--Ethnic politics and the persistence of ethnic identification, by M. Parenti.--Black nationalism: conclusions and trends, by E. U. Essien-Udom.--Black power, by S. Carmichael and C. Hamilton.--Beyond the melting pot, by N. Glazer and D. P. Moynihan.