Harry A. Overstreet was born on 25 October 1875 in San Francisco, California. He received his BA from the University of California at Berkeley in 1899, and his BS from Oxford University in 1901. Upon returning to Berkeley, he became an instructor in philosophy and was promoted to associate professor in due course. The early influence of George H. Howison’s idealistic social philosophy directed Overstreet's course towards the cause of social democracy. In 1911 Overstreet was appointed professor of philosophy at City College of New York, to replace the deceased John J. McNulty. He was the head of the department of philosophy and psychology at City College until retiring in 1939. For all but two of those years, Morris R. Cohen was his philosophy colleague, and together they built up the department during the 1930s by adding Abraham Edel, Y. H. Krikorian, and Philip Wiener. Overstreet also was a lecturer at the New School for Social Research from 1924 to 1936. He was President of the American Association for Adult Education in 1940–41. Overstreet died on 18 August 1970 in Falls Church, Virginia.
From The Dictionary of Modern American Philosophers in Oxford Reference.