- United States Tax Court | Thursday, September 26, 1968 | Cited 0 times
- United States Tax Court | Monday, March 7, 1977 | Cited 0 times
- Court of Appeals for the Seventh Circuit | Monday, August 28, 1989 | Cited 0 times
- United States Tax Court | Wednesday, April 6, 1988 | Cited 0 times