- Illinois Supreme Court | Wednesday, May 28, 1969 | Cited 0 times
- Supreme Court of Iowa | Wednesday, December 15, 1971 | Cited 0 times
- Court of Appeals of Iowa | Thursday, June 15, 1989 | Cited 0 times
- Supreme Court of Iowa | Wednesday, March 17, 1982 | Cited 0 times
- Supreme Court of the United States | Monday, May 4, 1992 | Cited 0 times
- Supreme Court of the United States | Monday, June 25, 1984 | Cited 0 times