Van Abbemuseum
CABR 86939 (PRA Amsterdam, 24509) CABR 62654 (BG Amsterdam, 803/47) CABR NBI 95005, CABR 75745 (BRC, 764/47). Iteration number one. Pencil on paper, photocopies, 112 A4 sheets. "Making Use", Dutch Art Institute: Van Abbemuseum