ALS-Eleazar De Carvalho; ALS-Rudolph Ganz; LS-Rudolph Ganz; ALS-Adolph Heller; Program planning for Ernest Ansermet; Newspaper reviews of concert by Ernest Ansermet in Washington, DC; Letter from Rudolph Ganz soliciting donations for the Chicago Musical College; Requests by Rudolph Ganz for Dimitri Mitropoulos to review an overture composed by Ganz; Vienna reviews; Release of Eleazar de Carvalho from contract; 1908 Letter from Maurice Ravel to Rudolph Ganz (translated); Letter from Albert Schweitzer to Rudolph Ganz; Letter from Leroy Hurte to Bruno Zirato regarding engagement of "Negro conductors"; List of available conductors to lead Philharmonic, Nov 1956; Discussion of conductor contract policies with CAMI; Letters of interest from numerous conductors regarding possible engagement as Assistant Conductor by Philharmonic