Study for a System #1, 2009
Graphite on vellum
24 x 36 inches

Study for a System #1, 2009 (detail)
Graphite on vellum
24 x 36 inches

Study for a System #2, 2009
Graphite on vellum
24 x 36 inches

Study for a System #3, 2009
Graphite on vellum
24 x 36 inches

Study for a System #3, 2009 (detail)
Graphite on vellum
24 x 36 inches

Study for a System #4, 2009
Graphite on vellum
24 x 36 inches

Study for a System #4, 2009 (detail)
Graphite on vellum
24 x 36 inches

Study for a System #5, 2009
Graphite on vellum
24 x 36 inches