The Buffalo Sunday Morning News Nr. 44 informieren auf S. 38 über den Nachlass von Felix Mottl:

"            Mottl Biography.

     The current Musical Courier says that the late Felix Mottl's first biographer will be Dr. Willy Krientts [recte: Krienitz] of Munich. There are volumes of letters in the Mottl coffers from Wagner, Liszt, Bruckner (who was Mottl's teacher), Hans von Bulow, Hugo Wolf, Saint-Saens, Hans Richter, Dr. Riemann and others, not excluding a number from Nietsche [sic]."