- Supreme Court of Iowa | Wednesday, November 22, 1978 | Cited 0 times
- Supreme Court of Iowa | Wednesday, October 15, 1980 | Cited 0 times
- Supreme Court of the United States | Monday, May 20, 1968 | Cited 0 times
- Supreme Court of the United States | Monday, June 12, 1972 | Cited 0 times