So here's the deal: I was left craving some more Thomas Eakins paintings after 
John, 
Alia and I discovered the Eakins section of the 
Philadelphia Museum of Art over a week ago. So I heard about 
this exhibit "Dissecting the Gross Clinic" out at the University of Pennsylvania, about Eakins' painting 
The Gross Clinic, and decided to check it out. Now, call me crazy, but I got the notion from the description of the exhibit that the actual painting 
itself would be a part of the exhibit... alas, no dice – it was pretty much just a display case with some info and a small poster of the painting. Zip ZING! That's it. Silly me, I guess the actual painting is... in the 
Pennsylvania Academy of Fine Arts? (they share ownership of it with the 
PMA). I'll have to go check it out, and thus continue the wild goose chase. Or, in this case, the wild Gross chase.
In the meantime, here's a photo of the Eakins painting The Agnew Clinic, which was painted more than a decade after The Gross Clinic, in 1889 - and it is actually currently hanging in the Philadelphia Museum: