Pyroclastic Lava and Vegetation, Hitardalur, Eastern Snaefellsnes, Iceland, July 10 ,1972

Polypody Ferns, Great Spruce Head Island, Maine, July 2, 1971

Small Skunk Cabbage, Great Spruce Head Island, Maine, July 11, 1969

Orange and Black Lichen, Hard Head Island, Maine, July 26, 1969

Mushrooms and Moss, Great Spruce Head Island, Maine, July 20, 1971

Orange Lichen and Seaweed, Barred Islands, Maine, July 22, 1973

Yellow Lichen on Shore, Sloop Island, Maine, July 30, 1973

Lichen on Driftwood, Sloop Island, Maine, August 18, 1973

Seaweed, Great Spruce Head Island, Maine, July 15, 1971

Lichen and Fractured Rock, Peak Island, Maine, July 24, 1969

Fractured Basalt and Lichen, Peak Island, Maine, July 24, 1969

Tidal Pool, Butter Island, Maine, July 9, 1969

Lichen and Moss, Great Spruce Head Island, Maine, July 11, 1969

Twin Flower and Shell, Great Spruce Head Island, Maine, July 2, 1971

Lichen on Rock, Great Spruce Head Island, Maine, July 3, 1964

Blue Rocks and Orange Lichen, Little Spruce Head Island, Maine, July 26, 1963

Split Rocks, Little Spruce Head Island, Maine, July 26, 1963

Ferns and Moss, Great Spruce Head Island, Maine, July 12, 1964

Lady's Slipper Orchids, Great Spruce Head Island, Maine, June 8, 1964

Bryce Canyon, Dawn II