View Down Canyon with Boulders, Granite Rapids, Grand Canyon, Arizona, June 19, 1967

Pentstemon, Agua Caliente Ranch, April 15, 1958

Grandidier Channel, Sunlit Mountains, Antarctica, March 1976

River Rapids, Grand Canyon, Arizona, 1967

Tidal Estuary, Machiasport, Maine, August 18, 1974

Desert Flowers, Chinle, Arizona, August 22, 1953

Yucca schottii, X-9 Ranch, Arizona, May 1, 1958

Malacothrix glabrata, Papago Indian Reservation, Arizona, April 4, 1953

Fluted Schist, Lower Grand Canyon, Arizona, June 29, 1967

[Canadian Pacific Railroad cars beside buildings]

Haida, Kiusta, Queen Charlotte Isls., British Columbia

The Family of Man--Calgary

Haida, Skedans, Queen Charlotte Isls., British Columbia

North Dakota

Hunters With Kill, West Texas

Mertensia maritima, Marshall Island, Maine, 1937

View from Monastery Nunatak, Dry Valleys, Antarctica, December 31, 1975

Strangler Fig Roots, Tamiami Trail, Florida, March 7, 1954

Wiencke Island, Bismarck Strait, Antarctica, February 1976

Shackleton's Hut, Ross Island, Antarctica, January 1976