Fungus-like Mushrooms, Great Spruce Head Island, Maine, July 31, 1954

Balsam Fir, Great Spruce Head Island, Maine, August 1, 1954

Dew on Red-Top Grass, Great Spruce Head Island, Maine, July 31, 1954

Weathered Stump, Great Spruce Head Island, Maine, August 2, 1954

Tidal Pool, Gott's Island, Maine, September 1955

Blackberries and Grass, Great Spruce Head Island, Maine, August 30, 1954

Rocks on Shore, Gott's Island, Maine, September 1955

Seaweed and Rocks, Great Spruce Head Island, Maine, August 23, 1955

Lichen-covered Trees, Great Spruce Head Island, Maine, July 14, 1963

Lichen-Covered Trees, Great Spruce Head Island, Maine, July 14, 1963

Gott's Island, Maine, September 1955

Lichen on Rock and Dead Branches, Little Spruce Head Island, Maine, July 26, 1963

Lichen on Rock, Fish Hawk Point, Great Spruce Head Island, Maine, July 18, 1971

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

Mushrooms and Moss, Great Spruce Head Island, Maine, July 29, 1973

Lichen-Covered Spruce, Great Spruce Head Island, Maine, July 28, 1974

Rock Formations on Shore, Bradbury Island, Maine, July 25, 1974

Mushrooms and Balsam Branches, Great Spruce Head Island, Maine, August 28, 1973

Spruce Trees, Great Spruce Head Island, Maine, July 2, 1974

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