Robert Smithson, American, 1938 - 1973
Paleozoic Era, Cambrian Period, 1969
Crayon and marking pen on paper
17 × 14 in. (43.2 × 35.6 cm)
Work on paper (Drawing)
Gift of the artist
CA 6951.2
© Holt / Smithson Foundation / VAGA at Artists Rights Society (ARS), NY