Ice in Glacial Lake, Fjnllsarlon, South Coast, Iceland, August 1, 1972

Lichen on Round Stones near Flaajokull, South Coast, Iceland, July 31, 1972

Boulders on Shore, South Coast, East of Hofn, Iceland, August 2, 1972

Wall of River Gorge, Jökulsá á Brú (River), Iceland, July 29, 1972

Sandstone Cliff at Gray's Arch, Red River Gorge, Kentucky, April 18, 1968

Lichen on Gray Rock, Great Spruce Head Island, Maine, July 1954

Clam Shell on Log, Great Spruce Head Island, Maine, June 21, 1949

Sandstone Cliff, Detail, Double Arch Trail, Red River Gorge, Kentucky, April 18, 1968

Trailing Arbutus, Swift Camp Creek, Red River George, Kentucky, April 19, 1968

Beach Goldenrod and Fog, Great Spruce Head Island, Maine, August 16, 1954

Crab in Seaweed, Great Spruce Head Island, Maine, July 15, 1955

Broken Pitcher, Gott's Island, Maine, September 1955

Spruce Trunks and Grass, Great Spruce Head Island, Maine, August 9, 1954

Green Algae at Low Tide in Sand, Great Spruce Head Island, Maine, August 27, 1973

Gentoo Penguins, Port Lockroy, Antarctica, January 14, 1975

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

Frozen Pond, Commonwealth Glacier Moraine, Taylor Valley, Antarctica, December 10, 1975

Rhone and Taylor Glaciers, Taylor Valley, Antarctica, December 11, 1975

Moss and Rock, Litchfield Island, Arthur Harbor, Antarctica, January 15, 1975

Rocks and Seaweed, Three Island Beaches, Great Spruce Head Island, Maine, July 22, 1965