Chapter 5, 17 January 1952
Igor Stravinsky
Nadia Boulanger
Paul Sacher Stiftung
17 January 1952
Letter
Chapter 5, 8 December 1951
Nadia Boulanger
Igor Stravinsky
Bibliothèque nationale de France
8 December 1951
Letter
Chapter 4, 11 September 1951
Igor & Vera Stravinsky
Nadia Boulanger
Paul Sacher Stiftung
11 September 1951
Letter