Canada Warbler, Female, Ely, Minnesota, June 28, 1962

Canada Warbler, Male, Ely, Minnesota, June 28, 1962

Canada Warbler, Male, Great Spruce Head Island, Maine, June 27, 1971

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

Blackburnian Warbler Flying, Male, Great Spruce Head Island, Maine, June 24, 1968

Canada Warbler, Male, Great Spruce Head Island, Maine, June 29, 1963

Redstart, Female, Great Spruce Head Island, Maine, June 27, 1969

Yellow Warbler, Male, Great Spruce Head Island, Maine, July 1, 1945

Great Blue Heron, Taylor Slough, Everglades National Park, Florida, January 1974

Canada Warbler in Flight, Great Spruce Head Island, Maine, June 29, 1963

Canada Warbler, Male, Great Spruce Head Island, Maine, June 29, 1969

Redstart, Female, Great Spruce Head Island, Maine, June 25, 1963

Dead Cow and Tree, Arizona, May 1940

Dead Cow and Tree, Arizona, May 1940

Square Tower House, Hovenweep National Monument, Utah, October 12, 1960

Doorway, Roma, Texas, April 1947

Monument Valley, Arizona, October 1940

Pool, Music Temple Creek, Glen Canyon, Utah, September 23, 1961

Canyon de Chelly, Arizona

Old Car, La Bajada, New Mexico, August 26, 1960