Ash, Lava and Snow, Deception Island, Antarctica, January 19, 1975

Melting Ice, New Harbor, McMurdo Sound, Antarctica, December 15, 1975

Rain Drops on Grass, Great Spruce Head Island, Maine, August 5, 1973

Lobsterman's Wharf, Stonington, Maine, August 17, 1973

White Asters, Great Spruce Head Island, Maine, August 24, 1972

Seaweed-Covered Rocks and Green Algae, Great Spruce Head Island, Maine, August 14, 1973

White Deposit on Cliff, Bradbury Island, Maine, August 25, 1973

Yellow Fungi on Tree Trunk, Great Spruce Head Island, Maine, August 28, 1973

Melting Ice, New Harbor, McMurdo Sound, Antarctica, December 15, 1975

Lower Taylor Valley, Commonwealth Glacier, Antarctica

Adélie Penguin Rookery, Cormorant Island, [Antarctica], January 17, 1975

Adélie Penguins Rookery, Cormorant Island, [Antarctica], January 17, 1975

Rock Cliff with White Deposit, Bradbury Island, Maine, August 25, 1973

Mustard-Colored Lichen on Schisty Rock, Oak Island, Maine, August 26, 1973

Cantharella in Grass, Great Spruce Head Island, Maine, August 4, 1973

Mussel Shells and Crow Feathers, Great Spruce Head Island, Maine, August 6, 1973

Spruce Trunk in Forest, Great Spruce Head Island, Maine, August 14, 1973

Mussel Shells and Blue Rock, Great Spruce Head Island, Maine, July 27, 1968

Roses and Hawkweed, Bear Island Beach, Great Spruce Head Island, Maine, June 16, 1969

Orange Lichen and Black Algae, Great Spruce Head Island, Maine, June 16, 1969