The issue comes up now and then.
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):