Robert Dryden also was one of the voice performers on the popular "National Lampoon Radio Hour" show of the 1970's. One of his roles was that of "Humphrey C. Cornholt" in the "High School Confidential: The Case of the Mad Vandal" episode.
Did You Know?
Dryden was a voice-over regular on the popular 1930s radio series "Gangbusters" that featured weekly episodes based actual crime incidents. Each program ended with various descriptions of wanted criminals, many of whom were later arrested due to avid listener participation.