- United States Tax Court | Monday, June 21, 1971 | Cited 0 times
- Court of Appeals for the Seventh Circuit | Wednesday, February 27, 1974 | Cited 0 times
- Supreme Court of the United States | Monday, November 6, 1933 | Cited 0 times
- United States Tax Court | Tuesday, August 10, 1999 | Cited 0 times