image is from "Zoological Sketches by Joseph Wolf". It was
painted for the Zoological Society of London and published by Henry Graves
& Co., London, 1861. The lithographs in Zoological Sketches are
by John Smit after drawings by Joseph
Wolf. The thylacine was number 31 in a series of 32 sketches.
Note that the individual in the foreground is displaying an erect tail