Bachelor, Amherst College, 1952. Master of Arts, Columbia, 1954. Doctor of Philosophy, Columbia, 1960.
Instructor history, Amherst College, 1956-1959; from instructor to assistant professor of history, Columbia, 1959-1961; visiting professor, Columbia, 1967-1968; humanities faculty, Sarah Lawrence College, Bronxville, New York, since 1961; chairman, Sarah Lawrence College, Bronxville, New York, 1985-1989, 98-; trustee, Sarah Lawrence College, Bronxville, New York, 1971-1976.
Freedom rider civil disobedience to racism, 1961, war draft resistance arrests, 1967, 70. Member of American Association of University Professors (chapter chairman 1966-1969), American Association for Advancement Slavic Studies, American History Association, Sigma Xi, Phi Beta Kappa.
Married Laura Regina Rosenbaum, June 11, 1957. Children: David R., Ariane R.