- United States Tax Court | Wednesday, June 15, 1960 | Cited 0 times
- Court of Appeals for the Seventh Circuit | Friday, April 10, 2009 | Cited 0 times
- Court of Appeals for the Seventh Circuit | Friday, April 10, 2009 | Cited 0 times
- United States Tax Court | Tuesday, August 27, 1974 | Cited 0 times