A Capitan Grande Man - Diegueño

Lichen on Brown Rock, Sugar Loaf, Barred Islands, Maine, June 23, 1969

Lichen on Brown Rock, Sugar Loaf, Barred Islands, Maine, June 23, 1969

Sculptured Rock, near House Rock Rapids, Marble Canyon, Arizona, June 13, 1967

Sculptured Rock, near House Rock Rapids, Marble Canyon, Arizona, June 13, 1967

Sculptured Rock, near House Rock Rapids, Marble Canyon, Arizona, June 13, 1967

Glacier-scratched Rock, Great Spruce Head Island, Maine, July 21, 1971

Red Boulders, Muley Tanks, Waterpocket Fold, Utah, August 22, 1963

Yellow Leaves and Asters, Sangre de Cristo Mountains, Santa Fe Basin, New Mexico, September 20, 1950

Peeling Birch Bark, Great Spruce Head Island, Maine, June 24, 1969

Grass and Tamarisk, Music Temple Bar, Glen Canyon, Utah, September 23, 1961

Tamarisk and Black Cliff, near House Rock Rapids, Marble Canyon, Arizona, June 13, 1967

Sunlit Cliff and River, Marble Canyon, Arizona, June 15, 1967

Reflections in Sand at Edge of River, Mile 122, Grand Canyon, Arizona, June 22, 1967

Reflections in Sand at Edge of River, Mile 122, Grand Canyon, Arizona, June 22, 1967

Gerlache Strait from Research Vessel "Hero", Antarctica, February 25, 1976

Iceberg, Arthur's Harbor, Palmer Station, Antarctica, February 13, 1976

Sunset Light on Anvers Glacier, Palmer Station, Antarctica, February 18, 1976

Guano-Covered Rocks, Cormorant Island, Palmer Station, Antarctica, February 14, 1976

Suess Glacier, Taylor Valley, Antarctica, January 7, 1976