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