Cherix Christophe, Michael Mason Rainer, Mavridorakis Valérie, Morris Robert, Hans Ulrich Obrist, Robert Morris - Estampes et multiples - 1952-1998, Genève, Chatou, Cabinet des estampes; Maison Levanneur, Centre National de l'Estampe et de l'Art Imprimé, 1999, p. 24, repr. coul., n° 7

Castleman, Riva, Oldenburg, Richard E., American Prints 1960-1985 - In the Collection of The Museum of Modern Art, New York, Museum of Modern Art, 1986., p. 269

Goosen, E. C., -, dans Art in America, vol. 58, n° 3, 1970., p. 108

Beardsley, John; Lerner, Abram, Probing the Earth - Contemporary Land Projects, [Exposition, Washington D. C., Hirschhorn Museum and Sculpture Garden 1977-1978], Washington D. C., Hirschhorn Museum and Sculpture Garden,, pp. 56-57