An autograph postcard from the important German composer to cellist Rudolf Döblin, apologizing that he cannot help find a piece of sheet music, apparently for one of his own Cello Sonatas, which he humorously refers to as "that questionable sonata" and refers Döblin to three of the greatest cellists of the era (Gregor Piatigorsky, Joseph Schuster, and Nikolai Graudan.) Postmarked Great Barrington, MA, September 23, 1943. Hindemith writes: "Dear Döblins, thanks for your letter! The only advice concerning that questionable sonata I can give, is that you might ask Piatigorsky, or Schuster, or Graudan, or... or... It is not to be found in the composer's shelves. Herzlichst yours, Paul Hindemith." Light toning, but overall in very fine condition. 5.5 x 3.5 inches (13.8 x 8.8 cm).

Rudolf and Helga Döblin emigrated to the United States from Germany during World War II. Rudolf Döblin was a long-serving cellist of the Buffalo Symphony Orchestra, while Helga taught German and Classics at Skidmore College, and they were well connected with many other emigrés in musical and artistic spheres.