Honegger, Arthur - Autograph Letter Signed 1948

French-born Swiss composer (1892-1955), and member of Les Six.  Autograph letter written in French (sold untranslated), signed and dated by him in Genoa, 1948, to the Argentine music director Cirilo Grassi-Diaz.  Size is 5.1 x 9.5 inches, 1 page, minor stains over the upper-right corner, otherwise in excellent condition.