Contour Lines From Nearby Mountain Scribed into Swamp Grass 1968 Dennis Oppenheim Contour Lines From Nearby Mountain Scribed into Swamp Grass Gelatin silver prints, map, and text panel 88 x 101 1/16 x 1 1/2 in. (223.5 x 256.6 x 3 cm) Gift of Mr. and Mrs. Jack Polatnick