William N. Copley, Untitled, 1973, charcoal on paper, 40 x 26 inches, 101.6 x 66 cm
 

William N. Copley, Untitled (Plow), 1970, ink on paper, 20 x 25 inches, 50.8 x 63.5 cm

William N. Copley, Untitled, 1973, charcoal on paper, 40 x 26 inches, 101.6 x 66 cm

William N. Copley, Untitled, 1973, charcoal on paper, 26 x 40 inches, 66 x 101.6 cm

William N. Copley, Untitled, 1971, ink and charcoal on paper, 29 x 23 in, 73.7 x 58.4 cm

William N. Copley, Untitled, 1970, ink and pencil on paper, 29 x 23 inches, 73.7 x 58.4 cm

William N. Copley, Untitled, 1965, ink and collage on paper, 9 1/2 x 15 3/8 inches, 24.1 x 39.1 cm

William N. Copley, Untitled, 1969, charcoal on paper, 24 x 18 inches, 61 x 45.7 cm