Grass and Pools, Stone Creek, Grand Canyon, Arizona, June 22, 1967

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

Stones and Reflections, Upset Rapid, Mouth of 150 Mile Canyon, Grand Canyon, Arizona, September 20, 1967

Drips from Bottom of Falls, Travertine Falls, Grand Canyon, Arizona, September 23, 1967

Mimulus and Ferns, Travertine Falls, Grand Canyon, Arizona, September 23, 1967

Cascade Above Gorge, Deer Creek, Grand Canyon, Arizona, September 19, 1967

Waterfall Outside Travertine Grotto, Grand Canyon, Arizona, September 23, 1967

Rock Formations Above Bright Angel Creek, Grand Canyon, Arizona, September 16, 1967

Sand Ripples and Reflections, Kanab Creek, Grand Canyon, Arizona, June 24, 1967

Marble Canyon of the Colorado River, Tatahatso Point, Arizona, August 11, 1969

Cove Erosion, Bull Pass, Antarctica, December 27, 1975

Melting Ice and Moraine, Dailey Islands, McMurdo Sound, Antarctica, December 30, 1975

Ice Pinnacles, Dailey Islands, McMurdo Sound, Antarctica, December 30, 1975

Weddell Seals, Antarctica, 1975-1976

Melting Ice and Moraine, Royal Society Mountains, Dailey Islands, McMurdo Sound, Antarctica, December 30, 1975

Ventifacts, Antarctica, December 1975

Dry Valleys, Antarctica, 1975

Monastery Nunatak, Antarctica, December 1975

Polar Plateau, South Pole Flight, Antarctica, December 1975

Polar Plateau, Antarctica, December 1975