Erving Severtson interview, February 19, 1981
Vernon Hansen interview
Stewart Govig interview
John Schiller interview
Donald Farmer interview
Erving Severtson interview, October 1997
Kelmer Roe interview
Jim Van Beek and Richard McGinnis interview
Erving Severtson interview, April 6, 2000
Erving Severtson interview, April 10, 2000