- Supreme Court of the United States | Wednesday, February 23, 1977 | Cited 0 times
- District Court, N.D. Iowa | Tuesday, June 30, 1981 | Cited 0 times
- Court of Appeals for the Eighth Circuit | Friday, April 9, 1982 | Cited 0 times
- Supreme Court of the United States | Monday, January 13, 1969 | Cited 0 times