COMPOSERS AND MUSICIANS -- 20th CENTURY. Collection of letters by composers and musicians including Igor STRAVINSKY (note in German asking for a letter to be sent to Moscow, Monte Carlo, 2 May 1922, framed and glazed), Wilhelm FÜRTWÄNGLER (typed letter signed to Dr Unger, 4 September 1919, asking him to send scores of his new compositions in March/April the next year), Ferrucio BUSONI (1912), Aaron COPLAND (1948), Darius Milhaud (2, 1953 and n.y.), Yehudi Menuhin (1966), Virgil Thomson, Bruno Walter, Roy Harris and Ernest Bloch, with letters by Albert Schweitzer, Romain Rolland and others, 19 in total.