Gull Weather Vane and Boats, Great Spruce Head Island, Maine, July 25, 1965

Spruce Tree and Bay Bushes, Ship Harbor, Mount Desert Island, Maine, August 5, 1965

Tidal Pool and Barnacled Rocks at Anemone Cave, Mount Desert Island, Maine, August 6, 1965

Moss-Covered Tree Trunk, Great Spruce Head Island, Maine, July 5, 1968

Lichen Behind Skogar, Iceland, July 6, 1972

Ice in Glacial Lake, Northern Edge of Eyjafjallajokull (Glacier) near Thorsmork, Iceland, July 7, 1971

Alcove at Gray's Arch, Red River Gorge, Kentucky, April 18, 1968

Blue Vitrified Lava and Lichen, Craters of the Moon [National Monument], Idaho, July 2, 1975

Lichened Rocks on Shore, Great Spruce Head Island, Maine, August 14, 1973

Spruce Trunk with Dead Branches, Great Spruce Head Island, Maine, July 5, 1969

Folded Schist, Little Spruce Head Island, Maine, July 27, 1969

Skunk Cabbage, Birch Log and Moss, Great Spruce Head Island, Maine, July 2, 1971

Mussels Left by Crows, Great Spruce Head Island, Maine, July 21, 1969

Folded Schist and Seaweed, Little Spruce Head Island, Maine, July 27, 1969

Grass and Rock at Sunrise, Great Spruce Head Island, Maine, July 31, 1963

Washington's Old Home, Mt. Vernon, Va.

In Camp

A Haida Shaman's Rattle

Water Flowing in the Chasm, Deer Creek, Grand Canyon, Arizona, June 24, 1967

Pond Brook, Whiteface Intervale, New Hampshire, October 5, 1956