File includes liner notes, recording timing notes, and notes for corrections to the score, all for the recording of Heitor Villa-Lobos' first piano concerto. The liner notes were written by Ralph Gustafson, a friend of Villa-Lobos and Ellen Ballon, to whom the concerto is dedicated and who performed the concerto for its recording in 1948. The concerto was written in Rio de Janeiro in 1945. The file includes directions for transcribing Villa-Lobos' piano concerto from the records of its American premiere in Dallas, Texas with the Dallas Symphony Orchestra, conducted by Antal Dorati.
Item is an unsolicited manuscript reproduction of a piano sonata by David Willens, sent to Ellen Ballon by the Society for the Encouragement of Contemporary Music on December 18, 1959. File includes a letter from the Society to Ellen Ballon. The composition was "dedicated to the memory of Alexander Guroff."
Item is a copy of the second tale in Medtner's Two Tales, Op. 14, for piano. It was published by P. Jurgenson and distributed in Leipzig by Robert Forberg in 1907 and includes an inscription to Ellen Ballon from Alfred La Liberté.
Item is a copy of Joseffy's composition, dedicated to his friend Moriz Rosenthal, and inscribed to Ellen Ballon. File includes a copy of handwritten piano scale exercises, presumably by Joseffy for Ballon.
Item is a copy of a manuscript composition by Alan Hovhaness, inscribed to Ellen Ballon. The composition is based on an Armenian folktale and is comprised of two movements, each of which imitates Armenian instruments (tmpoog for the first movement and the kanoon and oud in the second movement).