Cottonwood Trees and Snow, Tesuque River, New Mexico, December 29, 1977

Frost on Grass, Bosque del Apache, New Mexico, October 30, 1980

Reflections of Sun on Marsh, Bosque del Apache, New Mexico, October 30, 1980

Dry Wash and Stones, Ball Ranch, New Mexico, October 30, 1984

Skunk Cabbage Flowers, near Great Barrington, Massachusetts, April 19, 1957

Beaver Meadow Falls, St. Huberts, Adirondacks, New York, May 28, 1965

MacGillivray's Warbler, Male, Pacheco Canyon, New Mexico, June 15, 1954

Audubon's Warbler, Male, Santa Fe Basin, New Mexico, June 26, 1950

Red-faced Warbler, Long Park, Chiricahua Mountains, Arizona, June 6, 1959

Red-faced Warblers, Long Park, Chiricahua Mountains, Arizona, June 7, 1959

Red-faced Warblers, Long Park, Chiricahua Mountains, Arizona, June 7, 1959

Bay-breasted Warblers, Ely, Minnesota, July 6, 1962

Orange-crowned Warbler

Rocky Mountain Orange-crowned Warbler, Aspen Basin, Sangre de Cristo Mountains, New Mexico, July 13, 1959

Double Beaches, Great Spruce Head Island, Maine, June 7, 1949

Water Chute, Explorer's Canyon, Lake Powell, Utah, September 6, 1968

Pool with Reflections, Zion National Park, Utah, May 9, 1969

Spring Flowers, Great Spruce Head Island, Maine, 1938

Spring Flowers, Great Spruce Head Island, Maine, 1938

Ferns and Rocks, Great Spruce Head Island, Maine, August 1940