@jomifl
Thanks for that link. I sometimes dread wikipedia for the way articles draw you in and then go on and on.
It said "see Minard's map, below" but, despite reading on for an hour, it was not forthcoming, even among the references and further reading sections. No matter, it was the name I needed. Et voila!
http://en.wikipedia.org/wiki/Charles_Joseph_Minard
Under "Works"