Thanks guys !
I guess I should have explained why I'm looking for this kind of illustration. In my game, the characters will soon discover an ancient controversial book that describes a version of the mythology and cosmology of the world. Instead of telling them "you find the book" i'm actually writing it, and I want to give it to them. I thought the medieval woodcut style of illutrations would fit best.
I didn't know about Eric Holz. His stuff is great ! Do you know if he was the one who illustrated Ars Magica's Malleus Maleficarum ?