Rifle, Colorado, 1970-72 : Breite 381-417 Meter, Höhe 56-111 Meter, Verlag Gerd Hatje, Stuttgart, 1973. Christo, Volz, Wolfgang, Bourdon, David & Montgolfier, Bernard de, Harry N. Abrahms Inc, New York, 1990.
Wear. Minor stains. Writing. Not thorughly examined, the general impression is good.