Oak Tree and Mountainside, Great Smoky Mountains National Park, Tennessee, March 11, 1969

Sun on Brook, Cades Cove Road, Great Smoky Mountains National Park, Tennessee, June 30, 1968

Cow Lakes, near Jordan Valley, Oregon, July 11, 1975

Dwarf Rhododendron, Charlies Bunion, Great Smoky Mountains National Park, Tennessee, June 29, 1968

Maples and Firs, Hoh Rain Forest, Olympic Peninsula, Washington, July 24, 1975

Cloud Forming Over Mount Rainier, Washington, August 2, 1975

Lichen-covered Boulders, Big Bend Ranch, Texas, October 29, 1978

Lichens on Ionic Capital, Temple of Aphrodisios, Turkey, April 5, 1971

Hedgehog Cactus, Solitario Uplift, Big Bend Ranch, Texas, November 5, 1978

Edge of River at Sunset below Piute Rapids, San Juan River, Utah, May 24, 1962

Edge of River at Sunset below Paiute Rapids, San Juan River, Utah, May 24, 1962

Home near Espanola, New Mexico, October 1940

Chama River, New Mexico, October 1940

Chamita, New Mexico, October 1940

Hardwood Forest, Congaree, South Carolina, October 28, 1969

Water Stains, Music Temple, Glen Canyon, Utah, September 23, 1961

Water Stains, Music Temple, Glen Canyon, Utah, September 23, 1961

Monument Valley, Utah, August, 1947

Pool in Upper Hidden Passage, Glen Canyon, Utah, August 27, 1961

Pool and Mud Bank, Hidden Passage, Glen Canyon, Utah, September 22, 1961