Waterfall and Orange Cliff, Coyote Canyon, Utah, August 17, 1971

Monument Basin, Canyonlands National Park, Utah, April 30, 1973

Colorado Overlook, Canyonlands National Park, Utah, May 2, 1973

Weeping Rock, Zion National Park, Utah, August 18, 1969

Pool at Music Temple, Glen Canyon, Utah, August 27, 1961

Mimulus on Cliff, Detail, Coyote Canyon, Utah, August 19, 1971

Mimulus on Cliff, Detail, Coyote Canyon, Utah, August 19, 1971

Seep Streaks at Jacob Hamlin Arch, Coyote Canyon, Utah, August 18, 1971

Seep Streaks at Jacob Hamlin Arch, Coyote Canyon, Utah, August 18, 1971

Seep Streaks at Jacob Hamlin Arch, Coyote Canyon, Utah, August 18, 1971

Colorado Overlook, Canyonlands National Park, Utah, May 2, 1973

Dead Juniper, Colorado Overlook, Canyonlands National Park, Utah, May 2, 1973

Cottonwood Tree Trunks, Salt Creek, Canyonlands National Park, Utah, May 4, 1973

Red Hills, Slide Lake, Grand Teton National Park, Wyoming, June 29, 1975

Dead Trees in Terraces, Mammoth Hot Springs, Yellowstone National Park, Wyoming, August 17, 1952

Beginning of Narrows, Cathedral Canyon, Glen Canyon, Utah, September 6, 1962

Waterworn Rocks, Aztec Creek, Glen Canyon, Utah, September 5, 1962

Waterworn Rocks, Aztec Creek, Glen Canyon, Utah, September 5, 1962

Seep and Water Stains, Escalante River, Glen Canyon, Utah, September 4, 1962

Cherry Trees, Dumbarton Oaks, Washington, D.C., October 25, 1967