I was also delighted to find at Hathi Trust the Otto Ubbelohde illustrations to Grimm in 3 volumes. I learned about this wonderful contribution to Grimm iconography from Ulrich Fleming (of Krautblog). For all that I complain about the awful Coursera Fantasy-SciFi MOOC, meeting Ulrich in that class was a real pleasure, and it was on the occasion of reading Grimm in that class that Ulrich clued me in to the wonderful Ubbelohde illustrations. Here are some of the stories where I've used them:
Simeli Mountain
Aschenputtel
Hansel and Grethel
The Twelve Huntsmen