Ice and Rocks, Port Lockroy, Antarctica, January 14, 1975

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

Lichen, Cormorant Island, Antarctica, January 17, 1975

Lichens, Cormorant Island, Antarctica, January 17, 1975

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

Wharf House Window, Stonington, Maine, August 17, 1973

Lichen on Schist, Seal Island, Maine, August 22, 1972

Trees at Edge of Meadow, Great Spruce Head Island, Maine, August 14, 1973

Morning Glories on Beach, Little Spruce Head Island, Maine, July 19, 1971

Leathery Lichen, Great Spruce Head Island, Maine, August 28, 1972

Glaciated Basalt, Sugarloaf Island, Barred Islands, Maine, August 31, 1972

Moss, Leaf, Grass, Great Spruce Head Island, Maine, July 29, 1973

Lichen on Drift Log, Sloop Island, Maine, August 23, 1973

Goldenrod in Meadow, Great Spruce Head Island, Maine, August 26, 1972

South Meadow, Great Spruce Head Island, Maine, July 22, 1973

Orange Lichen on Rock, Barred Islands, Maine, July 22, 1973

The Cove, Great Spruce Head Island, Maine, July 22, 1973

Lichen on Blue Stones, Little Spruce Head Island, Maine, August 24, 1973

Fractured Schist, Bradbury Island, Maine, July 25, 1974

Spruce Trees and Rocks, Great Spruce Head Island, Maine, July 28, 1974