Hedgehog Cactus with Terpentine Bush, Madrona Ranger Station, Saguaro National Monument, Arizona, April 13, 1953 [Echinocereus Triglochidiatus and Aplopappus Laricifolius]

California Poppies, Nogales, Arizona, April 14, 1958

Livingston Island and Green Iceberg, from Royal Vessel Hero, Antarctic Peninsula, March 10, 1976

Reflections on Edges of River, Mile 122, Grand Canyon, Arizona, June 22, 1967

Sunlit Cliff and River, Marble Canyon, Arizona, June 15, 1967

Smith Island, from Schollaert Channel, Antarctica, February 26, 1976

Ice and Snowbank, Litchfield Island, Palmer Station, Antarctica, February 11, 1976

Pack Ice (Sunlight), Ross Sea, from U.S. Coast Guard Cutter "Glacier," January 1976

Molting Adélie Penguins, Cormorant Island, Palmer Station, Antarctica, February 14, 1976

Volcanic Boulders, Deception Island, Antarctica, February 26, 1976

Wiencke Island, Bismarck Strait from Research Vessel "Hero", Antarctica, February 24, 1976

Nussbaum Riegel, Taylor Valley, Antarctica, January 7, 1976

Dykes, Nussbaum Riegel, Taylor Valley, Antarctica, January 7, 1976

Arthur's Harbor, Palmer Station, Antarctica, January 1976

Mummy Pond, (Lake Chad), Taylor Valley, Antarctica, January 7, 1976

Sunlit Cliff and River, Marble Canyon, Arizona, June 15, 1967

Deception Island from Research Vessel "Hero", Antarctica, February 27, 1976

Tamarisk and Black Cliff, near House Rock Rapids, Marble Canyon, Arizona, June 13, 1967

King Snake, Arizona, 1959

Reflections in Sand at Edge of River, Mile 122, Grand Canyon, Arizona, June 22, 1967