OJ 13/29, [6] Handwritten letter from Rosenthal to Schenker, dated December 14, 1902

Rosenthal identifies Fritzi Neumann, and explains the background to her application.

OJ 89/4, [2] Typewritten letter (carbon copy) from Hoboken to Schenker, dated March 19, 1930

Hoboken compares performances of Beethoven's Missa solemnis by Furtwängler and Klemperer. — He has experienced pains in his arm, and has taken recuperative lessons from Rudolf Breithaupt. — He details work he has been doing for the Photogramm Archive, work of his own, and that for Schenker.