Eugene KURTZ (1923-2006). Autograph music manuscript, Ça..., 1971-1972; 4 spiral-bound notebooks 31 x 23.5 cm, approx. 145 leaves (mostly double-sided), plus blank ff. Drafts and sketches of Ça..., a diagram for orchestra, published by Jobert in 1972. These drafts and working manuscripts are written in black pencil in 4 12-line Passantino Brands notebooks. Several music stands are written on the same staff, so as to fit the large orchestra into 12 lines. There are crossed-out bars, erasures and corrections, notes and sketches. The books are numbered: I containing 260 bars and sketches; I bis, with bars 255-320 and 151-160; II, with bars 12-212; III, with bars 213-320 (several crossed out).