75/3779 Heeneman, C. (b.1924). Béla Bartók. Mikrokosmos. Pièces de piano progressives. N.pl., n.d., 10 colour stencil prints, 42,8x25,8 cm. (image), 51x35 cm. (portfolio) signed and numb. "Chr. Heeneman 2/12" in ballpoint on fold. flap of portfolio and "Chr. Heeneman" in lower right corner of each plate, loose as issued in orig. stiff paper portfolio (fine).