He was also a nationally acclaimed author and lecturer in supervisory training and executive development.
He devoted his first two years of study at Ohio State to engineering before branching out into chemistry, English composition and literature, commerce, and economics.
In 1941, Halterman's education was temporarily interrupted when he enlisted with the U. S. Air Force during World War II.
In 1965, Halterman was appointed assistant professor of Management and Public Administration at the University of Denver.
As a professor in the College of Business, he specialized in management development center operation, corporate forecasting and planning, individual objective setting, the analysis of operations, and management and supervisory training.