Artist: Sidney Paget
Picture credit: http://en.wikipedia.org/wiki/File:Holmes_reichenbach.jpg
The Canonical reference is as follows:
"A few words may suffice to tell the little that remains. An examination by experts leaves little doubt that a personal contest between the two men ended, as it could hardly fail to end in such a situation, in their reeling over, locked in each other's arms. Any attempt at recovering the bodies was absolutely hopeless, and there, deep down in that dreadful cauldron of swirling water and seething foam, will lie for all time the most dangerous criminal and the foremost champion of the law of their generation."
- The Adventure of the Final Problem
Then, Roger Johnson brought the following illustration by Arthur Twidle to my attention:
Artist: Arthur Twidle
I think this image is stunning. Blasphemy I know, but I actually prefer this to the Paget. Holmes and Moriarty are much more how I imagined them to be here than in the Paget.