- Supreme Court of Iowa | Wednesday, March 16, 1977 | Cited 0 times
- Supreme Court of the United States | Monday, May 14, 1973 | Cited 0 times
- Supreme Court of the United States | Monday, May 20, 1974 | Cited 0 times
- Supreme Court of the United States | Tuesday, May 24, 1983 | Cited 0 times