http://www.artcyclopedia.com/artists/klee_paul.html
_ Who Was Paul Klee?
https://youtu.be/Nq9oBYgkxaw
_ Art with Mati and Dada – Paul Klee | Kids Animated
https://youtu.be/eqHJ9gDLkL8
_ Paul Klee Art Documentary. Episode 13
https://youtu.be/ZxOHF6GzXyI