- Supreme Court of Iowa | Wednesday, May 25, 1977 | Cited 0 times
- Supreme Court of Iowa | Wednesday, November 23, 1988 | Cited 0 times
- Court of Appeals for the Eighth Circuit | Thursday, October 15, 1987 | Cited 0 times
- Supreme Court of Pennsylvania | Friday, October 3, 1986 | Cited 0 times