Autograph letter from the daughter of Cosima Wagner and Hans von Bulow, to conductor Arturo Toscanini, signed by Daniela von Bülow and by Eva Wagner ("Daniela"; "Eva"), waiting for him with affectionate impatience, 1 page, 8vo, on a postcard depicting Richard Wagner, Lucerne, 27 June 1938; together with a note in an unidentified hand concerning the final date of the original score of Wagner's Parsifal.