Christo, Over the River (Project for Arkansas River, State of Colorado). Drawing 2010 in two parts 15 x 96" and 42 x 96" (38 x 244 cm and 106.6 x 244 cm). Pencil, pastel, charcoal, wax crayon, enamel paint, wash, fabric sample, hand-drawn topographic map and technical data. Photo: André Grossmann. © 2010 Christo. Ref. # 78.
Christo, The River (Project) Drawing 1992. 11 x 14" (28 x 35.5 cm). Pencil, charcoal, wax crayon, ballpoint pen and cardboard. National Gallery of Art, Washington, D.C., USA. Photo: André Grossmann. © 1992 Christo
Christo, Jeanne-Claude and their team at work in the Arkansas River valley, Colorado, August 2000. Photo: Wolfgang Volz © 2000 Christo
Christo, Over the River (Project for Arkansas River, State of Colorado). Drawing 2011 in two parts. 15 x 65" and 42 x 65" (38 x 165 cm and 106.6 x 165 cm). Pencil, charcoal, pastel, wax crayon, enamel paint, aerial photograph with topographic elevations and fabric sample. Photo: André Grossmann. © 2011 Christo. Ref. # 35
Christo, Over the River (Project for Arkansas River, State of Colorado). Drawing 2013 in two parts. 15 x 96" and 42 x 96" (38 x 244 cm and 106.6 x 244 cm). Pencil, pastel, charcoal, wax crayon, enamel paint, fabric sample and aerial photographs with topographic elevations. Photo: André Grossmann. © 2013 Christo. Ref. # 39