- Supreme Court of Iowa | Wednesday, February 21, 1979 | Cited 0 times
- New York Court of Appeals | Tuesday, November 27, 1979 | Cited 0 times
- Supreme Court of Minnesota | Friday, January 10, 1975 | Cited 0 times
- Supreme Court of Iowa | Wednesday, March 17, 1982 | Cited 0 times
- Supreme Court of Minnesota | Friday, September 16, 1983 | Cited 0 times