alan_karp: Since we're referencing the Dennis and van Horn paper a lot, we might as well go to the original source. The paper is in the ACM Archives (CACM vol 9, #3, pp 143-155, March 1966), which you may not have access to.
     shap: THANK YOU! In the past, I either had not been able to find the original TR or MIT hadn't scanned it yet. This is great.