Mangrove and Lava, Academy Bay, Santa Cruz Island, Galápagos Islands, March 17, 1966

Marine Iguanas, Punta Espinosa, Fernandina Island, Galápagos Islands, April 3, 1966

Rocks, Lichen, Vegetation, South Plazas Island, Galápagos Islands, June 6, 1966

Lava Gull, Tower Island, Galápagos Islands, March 22, 1966

Yellow-crowned Night Heron, Juvenile, James Bay, Santiago Island, Galápagos Islands, April 12, 1966

Dendroica petechia Bathing, Academy Bay, Santa Cruz Island, Galápagos Islands, April 27, 1966

Green Turtle, Turtle Cove, Santa Cruz Island, Galápagos Islands, March 12, 1966

Early Morning Light on Way to Tower Island, Galápagos Islands, March 21, 1966

Frigate Birds, Displaying, Tower Island, Galápagos Islands, March 23, 1966

Galápagos Penguins, Punta Espinosa, Fernandina Island, Galápagos Islands, April 3, 1966

White Aspen Trunks, Route 14, Routt County, Colorado, May 28, 1975

Wet Leaves on Tree Trunk, Tortuguero Park, Costa Rica, March 7, 1984

Spotted Sandpiper, July 7, 1940

Fish Hawk, July 18, 1940

Arctic Tern, Matinicus Rock, Maine, August 5, 1949

Cormorant's Nest, Colt Head Island, Maine, June 28, 1949

Crow's Nest on Ground, Sloop Island, Maine, May 1937

Spotted Sandpiper, 1938

Fish Hawk, July 18, 1940

Cloud Reflection in Muley Tank, Waterpocket Fold, Utah, August 23, 1963