. . . "Musical scores" . . . . "Correspondence and other material relating to Soulima Stravinsky as pianist, lecturer, and teacher; notebooks and other material about Mozart's piano concertos and other course material; clippings and other material about Igor Stravinsky; published scores associated with or inscribed to Igor Stravinsky; Sketchbook by Igor Stravinsky (1917?). Inscriptions are by Georges Auric, Serge Diaghilev, Darius Milhaud, Francis Poulenc, and Serge Prokofiev. Correspondents include Nadia Boulanger, Alexander Tcherepnin, Ernest Ansermet, Nikolai Lopatnikoff, Ruth Slenczynska, Murray Adaskin, Alexander Uninsky, and Malcolm Bilson. Several letters are from Igor Stravinsky, and there is one leaf in Igor Stravinsky's hand concerning Haydn's and Mozart's works among the published scores. The film of a rehearsal with Igor Stravinsky conducting has been separated from the collection and sent to NYPL Rodgers and Hammerstein Archives of Recorded Sound." . . "Correspondence" . . . . . . . . . . . . "Clippings" . . . .