Signed photograph of the American tenor, who has inscribed  to Charles Drumheller, tenor and longtime rehearsal pianist at the Metropolitan and Chicago Lyric Opera, "To Charlie / from his friend / Riccardo Martin / 1919" to the lower portion of the image.  Martin is shown in costume as Radamès for a production of Aida. Light toning throughout, else in fine condition.  6 x 8 inches (15.2 x 20.3 cm.).