Bycatch from my Snark hunt:
I discovered that “face” in Matthias Grünewald’s painting recently, but I was not the first. I think that Gustave Doré found it much earlier.
2018-09-21, updated 2018-10-13
2017-09-13, update: 2018-10-11
In his illustrations to Lewis Carroll's "The Hunting of the Snark" (1876), Henry Holiday might have referred to a detail in this panel of the Isenheim Altarpiece. pic.twitter.com/Q0AruMIpps
— Goetz Kluge (@Bonnetmaker) December 26, 2017
Retweeted by Musée Unterlinden (2017-12-27):