Slow Lorris

check out Bryant  Devlin Molloy's animals

Jack in the box

"Boekillustratie voorstellende een duveltje uit een doosje"
[psychotic jack-in-the-box] 1920ish
via Geheugen van Nederland

1900-1940 also via Geheugen

Endochondral Ossification in Knee Joint of Kitten

circa 1916, classroom drawing (no memory of where I found this)

Jan Toorop's 1924 calendar

Via the Wolfsonian. The image right above is my fave.

Also see Folkert's Toorop post on But Does it Float