- United States Tax Court | Thursday, December 14, 2000 | Cited 0 times
- Court of Appeals for the Seventh Circuit | Wednesday, August 2, 2000 | Cited 0 times
- Court of Appeals for the Seventh Circuit | Monday, November 15, 1999 | Cited 0 times
- Court of Appeals for the Ninth Circuit | Wednesday, March 4, 1992 | Cited 0 times
- Supreme Court of the United States | Tuesday, October 10, 1972 | Cited 0 times