I’ve been looking through the old books that I had as a child and I love “B is for Bear” by Dick Bruna (Dutch version pictured above). I’m lucky that my mother was such a packrat since the book is now out of print, although it is pretty worn. The illustrations are pure form and color, which I find really appealing. Best known as the creator of Miffy, Dick Bruna is still working in the Netherlands and has produced over 100 children’s books. His pictographic style was incredibly innovative and it makes sense that he was influenced by modern artists like Picasso and Matisse and De Stijl movement of the early 20th century.
You can find some of the older Dick Bruna titles like Snuffy (below, Dutch spelling), Cinderella, and Snow White at amazon, and the Miffy site has some nice graphics and games.