On July 1, 2023, to mark the museum's 30th anniversary, the KK Foundation Murnau presented its Blue Rider collection to the Murnau Castle Museum as a permanent loan. These works are now placed in dialogue with the oeuvre of Paul Klee, who occupies a special position within the Blue Rider group of artists. Although Paul Klee and Wassily Kandinsky lived only a few meters apart at Ainmillerstrasse 32 and 36 respectively between 1908 and 1914, they did not meet until October 1911 in Munich-Schwabing through Klee's Bernese school friend and fellow artist, Louis Moillet. Paul Klee was not yet represented in the first exhibition organized by the Blue Rider editorial team at the Thannhauser Gallery in Munich, which opened on December 18, 1911. The exhibition consisted solely of paintings, and at that time Klee considered himself primarily a draftsman and printmaker. It was only in the second exhibition of the Blue Rider group, held in the spring of 1912 at the Goltz book and art gallery in Munich and titled "Black and White," that Klee participated with 17 works. Among his exhibited pieces was the pen-and-ink drawing "Stonemason II" from 1910, the only work by Klee to be reproduced in the almanac "Der Blaue Reiter," published in 1912. A conservation note regarding the exhibition: Please note that to protect the delicate works on paper, we have had to significantly reduce the lighting.