- Supreme Court of the United States | Wednesday, April 21, 1971 | Cited 0 times
- Court of Appeals for the Eighth Circuit | Monday, November 4, 1991 | Cited 0 times
- Supreme Court of the United States | Wednesday, March 20, 1991 | Cited 0 times
- District Court, D. Puerto Rico | Monday, May 3, 1993 | Cited 0 times