Typed note signed from the beloved pianist to American composer David Diamond. May 27, 1965; 1 p. on a folded card printed with Horowitz' name. He writes: "Dear Mr. Diamond, It was very kind of you to write and send the clipping, and I greatly appreciated hearing from you. With warmest greetings, Sincerely, Vl. Horowitz." With original envelope. Very fine. 5 x 4 inches (12.5 x 10 cm).

From the collection of David Diamond, considered one of the preeminent American composers of his generation. He enjoyed wide success in the 1940's and 1950's, before the serial and modernist trends largely pushed him into the shadows. The New York Times described him as "part of what some considered a forgotten generation of great American symphonists, including Howard Hanson, Roy Harris, William Schuman, Walter Piston and Peter Mennin."