IVES, Charles (1874-1954). Autograph envelope, with signature ("Chas. E. Ives") in return address, addressed to Mary Bell in Dresden, New York, postmarked 28 November 1931. 3 3/8 x 5 3/8 in., stamped, in a shaped giltwood frame. Handwritten material of Ives in any form is exceedingly rare. -- CAGE, John (1912-1992). Postcard signed ("John Cage"), n.p., n.d. 1 page, oblong 8vo, in wood frame. Depicting a page from Cage's experimental Auszüge aus seiner Musik, of striking graphic character, showing 10 notes on two staves, each note surrounded by an irregular line border. Signed in ink. -- CRUMB, George (1929-). Autograph musical quotation signed ("George Crumb"), to Bobby Reller, n.p., n.d. 1 page, oblong 12mo, with autograph musical example in ink on a single hand-drawn stave, in a giltwood frame. Signing with "Best wishes to Bobby Reller," Crumb quotes a bar from his Processional for piano (1983). Together three items. (3)