Chapter 2, 15 March 1939
Soulima Stravinsky
Nadia Boulanger
Paul Sacher Stiftung
15 March 1939
Letter
Chapter 4, 27 April 1946
Igor Stravinsky
Nadia Boulanger
Paul Sacher Stiftung
27 April 1946
Letter
Chapter 4, 27 January 1946
Igor & Vera Stravinsky
Nadia Boulanger
Paul Sacher Stiftung
27 January 1946
Letter
Chapter 5, 27 June 1953
Nadia Boulanger
Igor Stravinsky
Bibliothèque nationale de France
27 June 1953
Letter