Wiencke Island, from Neumayer Channel, Antarctica, 1976

Dykes, Nussbaum Riegel, Taylor Valley, Antarctica, January 7, 1976

Dykes, Nussbaum Riegel, Taylor Valley, Antarctica, January 7, 1976

Tamarisk and Boulder, Tanner Flat, Grand Canyon, Arizona, September 14, 1967

Small Side Canyon, Lower Marble Canyon, Arizona, June 15, 1967

View Across Canyon, Stone Creek, Grand Canyon, Arizona, June 22, 1967

Surf, Quaddy Head, Maine, August 19, 1974

Fractured Rhyolite, Quaddy Head, Maine, August 19, 1974

Columnar Basalt Cliff, Whitmore Wash, Arizona, August 15, 1969

Grass, Great Spruce Head Island, Maine, July 4, 1982

Spruce Trunk and Young Spruces, Great Spruce Head Island, Maine, August 5, 1982

Badlands National Park, South Dakota, August 9, 1978

Sinking Creek Tunnel, Ozarks, Missouri, May 19, 1978

Tree Fern, Forest, Lake Mahinapoura, New Zealand, November 20, 1975

Pine Forest, Godley Peaks, Lake Tekapo, New Zealand, December 1, 1975

Tree Ferns near Fox Glacier, New Zealand, November 21, 1975

Fox Glacier, Westland National Park, New Zealand, November 21, 1975

Golden Broom in Creek Bed, Lake Tekapo, New Zealand, December 2, 1975

Skunk Cabbage, near Peekskill, New York, April 12, 1957

Fern Fiddles and Skunk Cabbage, Sherborn, Massachusetts, April 27, 1957