Often collaborated with John Clifford.
Interviewed in Tom Weaver's "Science Fiction Stars and Horror Heroes" (McFarland & Co., 2006).
Received a lifetime achievement award from a film institute in Kansas in 1989.
The Centron studio, the company he worked for in Lawrence, is now home to the University of Kansas' film department.
Directed over 400 educational, industrial and documentary films made by Centron Productions in Lawrence, Kansas. His real first name was Harold, but he used his nickname "Herk" on all of his work.