{"value"=>"Includes letters from Amy Beach (under the auspices of the American Woman's Club), Jeannette Abraham, Daniel Abrams, Claus Adams, Milton Adolphus, Hugh Aitken, Douglas Allanbrook, Bruce Amato, the American Music Center, the American-Scandinavian Foundation, the American Symphony Orchestra League, William Ames, Grace Anderson, Donald Andrus, Peter Angelo, Istvan Anhalt, the American Accordionists' Association, the American Harp Society, American Musical Digest, and others."}