Signed, titled, dated and inscribed "artist's proof" in pencil, lower margin * Harvest II, color etching, aquatint and drypoint on heavy cream wove paper, 1959. Signed, titled, dated and inscribed "Proof" in pencil, lower margin * Pompeii, color aquatint on heavy cream wove paper, 1959. Signed, titled, dated and inscribed "Proof" in pencil, lower margin