- Nebraska Supreme Court | Friday, October 4, 1968 | Cited 0 times
- Nebraska Supreme Court | Friday, January 4, 1963 | Cited 0 times
- Supreme Court of the United States | Monday, May 15, 1967 | Cited 0 times
- Supreme Court of the United States | Monday, May 20, 1968 | Cited 0 times
- Supreme Court of the United States | Monday, October 14, 1968 | Cited 0 times
- Supreme Court of the United States | Monday, November 17, 1969 | Cited 0 times