- Supreme Court of the United States | Wednesday, June 25, 1980 | Cited 0 times
- Court of Appeals for the Eighth Circuit | Wednesday, June 18, 1969 | Cited 0 times
- Supreme Court of Iowa | Wednesday, May 19, 1976 | Cited 0 times
- Supreme Court of Iowa | Wednesday, December 23, 1992 | Cited 0 times