- Supreme Court of Iowa | Wednesday, April 25, 1973 | Cited 0 times
- Nebraska Supreme Court | Friday, August 5, 1983 | Cited 0 times
- Supreme Court of Iowa | Thursday, April 13, 1972 | Cited 0 times
- Court of Appeals for the Eighth Circuit | Wednesday, February 20, 1980 | Cited 0 times
- Nebraska Supreme Court | Friday, July 27, 1984 | Cited 0 times
- Court of Appeals for the D.C. Circuit | Friday, November 28, 1975 | Cited 0 times
- Supreme Court of the United States | Tuesday, February 29, 1972 | Cited 0 times