- United States Tax Court | Monday, May 3, 1971 | Cited 0 times
- Court of Appeals for the Tenth Circuit | Wednesday, November 13, 1991 | Cited 0 times
- Court of Appeals for the Tenth Circuit | Thursday, April 10, 2008 | Cited 0 times
- United States Tax Court | Wednesday, March 29, 1989 | Cited 0 times
- Court of Appeals for the Fifth Circuit | Monday, January 3, 1977 | Cited 0 times
- Court of Appeals for the Fifth Circuit | Tuesday, May 2, 2000 | Cited 0 times