River with Iron-stained Stones, Kerlingarfjoll, Central Iceland, August 10, 1972

Boulders on Lava Field, Kjalhraun, Central Iceland, August 9, 1972

Flowers Among Lava Boulders, Fossardalur, Iceland, August 12, 1972

Honeycomb Weathering at Dimmuborgir, Mývatn, Iceland, July 26, 1972

Green Sea Cliff, Berufjordhur, on Road to Hofn, Iceland, July 30, 1972

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

Young Spruces and Old Spruce, Great Spruce Head Island, Maine, July 25, 1963

Bay Bushes, Great Spruce Head Island, Maine, June 8, 1964

Raspberry Leaves in Grass, Great Spruce Head Island, July 7, 1964

Cormorant's Nests and Mustard, Colt's Head Island, Maine, July 23, 1963

Double Beaches in Fog, Great Spruce Head Island, Maine, July 6, 1964

Sponges and Anemones, Anemone Cave, Mount Desert Island, Maine, August 6, 1965

Lichen and Birch Bark, Great Spruce Head Island, Maine, July 13, 1964

Peak Island from Little Barred Island, Maine, July 24, 1965

Yellow Grass, Backlighted, Great Spruce Head Island, Maine, July 20, 1964

Evening Primroses on Chain Links, Barred Islands, Maine, July 20, 1965

Beach Dandelions, Little Spruce Head Island, Maine, July 15, 1964

Sea Wrack and Red Algae, Bennet Cove, Mount Desert Island, Maine, August 5, 1965

Barnacles in Rock Cracks, Bennet Cove, Mount Desert Island, Maine, August 5, 1965

Boletus Mushrooms, Great Spruce Head Island, Maine, July 24, 1963