Primrose, William. (1904-1982) Signed PhotographScarce signed photograph from the leading violist of his time, a member of the London String Quartet and the NBC Symphony under Toscanini before embarking on an unprecedented successful solo career as violist. A very fine signed halftone portrait of Primrose with his viola, boldly signed on the image and inscribed below on the mount the photograph to the noted Columbian musicologist, Otto de Greiff (1903 1995): "For Senor Otto de Greiff, with