- Supreme Court of the United States | Wednesday, February 27, 1974 | Cited 0 times
- Supreme Court of Minnesota | Friday, May 12, 1978 | Cited 0 times
- Supreme Court of Minnesota | Thursday, July 3, 1980 | Cited 0 times
- Appellate Court of Illinois | Friday, July 7, 1978 | Cited 0 times