Bachelor, University Chicago. Master of Arts, University Chicago. Doctor of Philosophy, University Chicago, 1967.
Instructor Harpur College, 1962—1967. Assistant professor State University of New York, Binghamton, 1967—1974, associate professor, 1974—2004. Associate professor emeritus Binghamton University, since 2004.
Member Vestal Library. Board Trustees, New York, since 1979. Fellow: Royal Historical Society.
Married Virginia Darrow, March 17, 1956. Children: Jean, Cy, Katherine Ertle.