Erving Severtson interview, April 10, 2000
Erving Severtson interview, April 6, 2000
Erving Severtson interview, February 19, 1981
Erving Severtson interview, October 1997
Eugene Wiegman interview
George Arbaugh interview
Grace Blomquist interview (part 1)
Grace Blomquist interview (part 2)
Jim Van Beek and Richard McGinnis interview
John Schiller interview