Jonathan Porter, Tesuque, New Mexico, September 28, 1946

Stephen and Jonathan, Great Spruce Head Island, Maine, August 1, 1944

Stephen Porter, Great Spruce Head Island, Maine, August 16, 1944

Jonathan and Stephen Looking at Book, Tesuque, New Mexico, August 15, 1948

White-throated Sparrow, Male, June 28, 1939

Black-and-white Warbler, Male, July 1, 1940

Black-and-white Warbler, Male, July 1, 1940

Magnolia Warbler, Male, July 6, 1940

Stephen and Jonathan, Great Spruce Head Island, Maine, July 26, 1944

Stephen with Bull Snake, Tesuque, New Mexico, July 29, 1948

Stephen with Bull Snake, Tesuque, New Mexico, July 29, 1948

Cactus Wren, Arizona, April 22, 1941

Acadian Chickadee, Great Spruce Head Island, Maine, June 30, 1945

Spud Johnson, New Mexico, November 1940

Stephen Porter, Tesuque, New Mexico, August 1946

Stephen Porter, Great Spruce Head Island, Maine, August 8, 1944

Stephen Porter, Great Spruce Head Island, Maine, August 8, 1944

White Flower on Black Ash Cliff, Langahlidh, Iceland, June 20, 1972

Algae on Boulders, Low Tide, Hellnar, Snaefellsnes, Iceland, July 14, 1972

Sunflowers and Sand Dunes, Great Sand Dunes National Monument, Colorado, August 23, 1959