Virtuoso Russian pianist. Program, 11 x 11, eight pages, for Horowitz’s Golden Jubilee held at Carnegie Hall on January 8, 1978, signed on the first inside page in blue felt tip by Horowitz and signed in black felt tip by Wanda Toscanini (Arturo’s wife and Horowitz’s mother-in-law). In fine condition, with bisecting vertical storage fold, lightly affecting the first stroke of Horowitz’s signature. R&R COA.