Installation view, Sculpture, Paula Cooper Gallery, 155 Wooster Street, New York, May 1 - 26, 1990. © Judd Foundation / Artists Rights Society (ARS), New York. Photo: Geoffrey Clements.

Donald Judd
"Untitled" 1989
Cor-ten steel and blue plexiglass
9 5/8" x 39 3/8" x 9 5/8"

Donald Judd
"Untitled" 1989
Galvanized iron, lighttest, light gray plexiglass
114" x 27" x 24" overall

Donald Judd 
"Untitled" 1989
Clear andonized and blue anodized aluminum, black and orange plexiglass
38 3/8" x 78 3/4" x 78 3/4"

Donald Judd
"Untitled" 1989
Clear anodized aluminum
39 3/8" x 78 3/4" x 78 3/4"

Donald Judd
"Untitled" 1989
Clear anodized aluminum and orange plexiglass
39 3/8" x 78 3/4" x 78 3/4"