- Supreme Court of the United States | Tuesday, October 10, 1972 | Cited 0 times
- Court of Appeals for the Third Circuit | Tuesday, January 15, 1980 | Cited 0 times
- Supreme Court of Colorado | Monday, February 28, 1977 | Cited 0 times
- Court of Appeals for the Seventh Circuit | Friday, June 17, 1977 | Cited 0 times
- Supreme Court of Colorado | Monday, June 8, 1981 | Cited 0 times