answer: In honor of Schroeder's passion for Beethoven, the Charles M. Schulz Museum (Santa Rosa) and the Ira F. Brilliant Center for Beethoven Studies announced the launching in December 2009 of a permanent online exhibit of 60 of the 300 Schulz's cartoons that involve Schroeder and Beethoven: "Schulz's Beethoven, Schroeder's Muse" (accessible through the website www.americanbeethovensociety.org).