Mitropoulos, Dimitri. (1896–1960) [Rosenthal, Manuel. (1904–2003)] Typed letter signed to Manuel RosenthalTLS of the Greek born American conductor, then music director of the New York Philharmonic, to one of the most influential and respected French conductors of the 20th century. No place [New York?], October 29, 1953. 1 p. On Mitropoulos letterhead paper (watermark from Eaton's). Mitropoulos declines a request from Rosenthal to perform his (only) symphony, "I feel really ashamed to have to refuse such a thing to a musician of your calibre by telling you