- Supreme Court of the United States | Monday, June 18, 1973 | Cited 0 times
- Supreme Court of Iowa | Friday, January 14, 1972 | Cited 0 times
- Supreme Court of Colorado | Tuesday, April 18, 1972 | Cited 0 times
- Supreme Court of the United States | Monday, May 19, 1969 | Cited 0 times