Leonard Bernstein : [autographed photograph]
William Somerset Maugham : [autographed photograph]
Elizabeth Lyon Bowes : [photograph]
John Finley : [autographed photograph]
Frank Cyril James : [autographed photograph]
Douglas Clarke, Ellen Ballon, Frank Cyril James, and unknown man : [photograph]
William Howard Taft : [photograph]
William Schuman : [autographed photograph]
Heitor Villa-Lobos : [autographed photograph]
Ernest Ansermet : [autographed photograph]
Heitor Villa-Lobos : [autographed photograph]
John Bassett : [autographed photograph]
Letter from Yehudi Menuhin to Ellen Ballon
Anna Eleanor Roosevelt's response to invitation from Ellen Ballon
Letter from Walter de Mouilpied Scriver to Ellen Ballon
Telegram from Arminda Villa-Lobos to Ellen Ballon
Letter from Heitor Villa-Lobos to Ellen Ballon
Letter from Heitor and Arminda Villa-Lobos to Ellen Ballon
Letter from Heitor Villa-Lobos to Ellen Ballon
Letter from Arminda Villa-Lobos to Ellen Ballon
Letter from Heitor Villa-Lobos to Ellen Ballon
Autograph by Ignacy Jan Paderewski
Letter from Maurice Ravel
Letter from Edvard Grieg
Letter from Gustav Mahler
Letter from Jacques Offenbach
Autograph and musical incipits by Ignaz Moscheles
Postcard featuring Pietro Mascagni and signed by various musicians
Letter from Camille Saint-Saens
Letter from Camille Saint-Saens
Transcription of a letter from Felix Mendelssohn Bartholdy to J.H. Kufferath
Transcription of a letter from Felix Mendelssohn Bartholdy to J.H. Kufferath
Letter from Felix Mendelssohn Bartholdy to Professor Hildebrand
Letter from Felix Mendelssohn Bartholdy to Edward Deorient
Letter from Jules Émile Frédéric Massenet
Postcard from Jules Émile Frédéric Massenet
Transcription of a letter from Franz Liszt
Letter from Franz Liszt
Letter from Charles-Francois Gounod
Letter from Charles-Francois Gounod
Letter from Mary Goldie, private secretary to Alice Mary, Princess of Albany, to Ellen Ballon
Letter from Alice Mary, Princess of Albany, to Ellen Ballon
Letter from Wilhelm Backhaus to Ellen Ballon
Telegram from Isidore Ballon to Ellen Ballon
Letter from Major John White Hughes Bassett to Ellen Ballon
Letter from Alice Mary, Princess of Albany, to Ellen Ballon
Note from Phyllis Duke-Elder to Ellen Ballon
Note from Sir William Stewart Duke-Elder to Ellen Ballon
Letter from Edna Ferber to Ellen Ballon, Sally Ryan, and Ralph Gustafson
Letter from Frank Cyril James to Ellen Ballon