- Supreme Court of Iowa | Wednesday, December 22, 1993 | Cited 0 times
- Supreme Court of Iowa | Wednesday, February 14, 1996 | Cited 0 times
- Supreme Court of the United States | Wednesday, September 23, 1981 | Cited 0 times
- Supreme Court of the United States | Monday, June 23, 1969 | Cited 0 times