Otto Ubbelohde is the most famous of the German illustrators of the Grimm's fairy tales. What distinguishes him from everyone who came before and afterwards is that he located the scenes he chose to depict firmly in the region of Hessen, where the Grimms lived and where they collected most of their tales. When Ubbelohde shows, e.g., Briar Rose's castle (shown on the left) or Rapunzel's tower, he draws real buildings that exist to the present day (and, needless to say, get much publicity out of this connection). I also believe that the altar he shows in his drawing for Cat and Mouse in Partnership is a real altar in a real church (even if the tomb cover he shows depicts the artist himself). And the women, when they wear their Sunday finery, wear the traditional folk costumes of the region
I think this realism extends to the figures in his drawings. For example, the robbers shown in the image accompanying my last post appear to be portraits drawn from life—in fact, the young robber in the middle foreground has a face that also appears in other drawings, like in the first picture he shows for The Brave Little Tailor—there may have been a lad who modeled for these portraits. I'm also, and particularly, enthralled by the care with which he depicts animals in their characteristic postures.
None of this would amount to much if he were not a draftsman of the first class—he was. His line is clearly influenced by Art Nouveau (Jugendstil), which makes his drawings more than just faithful renderings of what he observed.
An edition with the complete drawings can be purchased on amazon. My one quibble with this edition is the translation the editor chose to go with the drawings. I can elaborate on this in the comments if someone is interested.