Marchesi, Mathilde de Castrone. (1821-1913) Interesting letter, mentioning her daughter's performance!An excellent autograph letter from the great soprano and legendary voice teacher, addressed to the Director of an opera company. In German. In full: "Dear Director, Since we have now decided to go to the three performances of our dear daughter Blanche in Prague, I should be most grateful if you would have the kindness to let me know the date of the first performance. I am delighted at the thought of meeting you and your beautiful, talented and