[American Avant-garde] Cage, John. (1912–1992) "1 Minute 5 1/2 Seconds For A String Player / 2nd Pages of An Unfinished Work" - Holograph Printed ScoreCOMPOSERS FACSIMILE EDITION 195[3], printed signature "John Cage," copyright statement and dedication to Broadus Erle, instruction "See "57 1 2" for explanation of notation." Printed on 2 large sheets (56 x 43 cm), each folded twice with graphic and unusual indeterminate musical notation printed across resulting double sheets and with 5 such large pages of music total between the cover pages. Red ink stamp of the American Composers Alliance Library,