Summer Snowstorm, Bryce Canyon, Utah, June 20, 1975

Inclusions in Sandstone, Willow Tanks, Waterpocket Fold, Utah, June 18, 1975

Dead Oak Branches in Alcove, Coyote Canyon, Utah, August 18, 1971

Wet Wall and Mimulus, Willow Canyon, Utah, August 12, 1971

Yellow Algae in Stream, Coyote Canyon, Utah, August 14, 1971

Sheds, La Bajada, New Mexico, September 3, 1960

Cliff in Monument Valley, Utah, September 24, 1947

Mud Flakes, Hanksville Road, Utah, August 17, 1963

Mud Flakes, Hanksville Road, Utah, August 17, 1963

Black Stones on Orange Rock, Kayenta, Arizona, August 16, 1963

Laurel Tree and Ferns, Muir Woods, California, January 28, 1959

Monument Valley, Arizona, October 1940

Arctic Tern, Matinicus Rock, Maine, July 31, 1949

Laurel Tree and Ferns, Muir Woods, California, January 28, 1959

Laurel Tree and Ferns, Muir Woods, California, January 28, 1959

Gannets, Bonaventure Island, Canada, 1938

Gray Erosions, Bentonite, Hanksville Road, Utah, August 17, 1963

Gypsum Flakes, Pagoda Canyon, Utah, August 25, 1963

Waterfall, Yellowstone Park, Wyoming, 1952

White-throated Sparrow