- Nebraska Supreme Court | Friday, July 14, 1972 | Cited 0 times
- Supreme Court of the United States | Monday, June 5, 1961 | Cited 0 times
- Supreme Court of the United States | Monday, June 13, 1966 | Cited 0 times
- Supreme Court of the United States | Monday, April 24, 1967 | Cited 0 times
- Supreme Court of the United States | Monday, June 28, 1971 | Cited 0 times