Iris and Yellow Lichen on Rocks, Barred Islands, Maine, June 21, 1981

Young Spruce Woods, Great Spruce Head Island, Maine, June 21, 1978

Cinnamon Fern, New Hampshire

Red Maple and Birch, New Hampshire

Fallen Trunk and Young Spruces, Great Spruce Head Island, Maine, July 30, 1984

Wake Robin, Trillium erectum, White Mountain National Forest, New Hampshire, May 19, 1953

Pinks and Cinders, near Dam Site on Thjorsa River, Iceland, June 26, 1972

Gold Sand and Sea-worn Black Lava Rocks, Near Budhir, Snaefellsnes, Iceland, July 12, 1972

Talus, South Coast near Radar Station, Iceland, August 2, 1972

Glacial Lake at Foot of Beidhamerkerjokull, a Finger Glacial Lake at Foot of Vatnajokull, South Coast, Iceland, August 1, 1972

Herdhubreid, Table Mountain and Lava Flow from Askja (Volcano), Iceland, July 22, 1972

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

Dogwood and Oak Trees, Daniel Boone National Forest, Red River Gorge, Kentucky, April 19, 1968

Fungus on Log, Great Spruce Head Island, Maine, July 25, 1949

Fungus on Log, Great Spruce Head Island, Maine, July 25, 1949

Moss and Grass on Talus, near Dam Site on Thjorsa River, Iceland, June 26, 1972

Dead Leaves and Pine Needles, Swift Camp Creek, Red River Gorge, Kentucky, April 19, 1968

Bear Berry, Swift Camp Creek, Red River Gorge, Kentucky, April 19, 1968

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

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