Tree Cactus and Bay, Plazas Island, Galápagos Islands, March 6, 1966

White Water Lilies, Saint Marks Refuge, Florida, May 9, 1954

Cypress and Cattails, Tamiami Trail Loop Road, Florida, February 11, 1974

Ground Cover and Cordon Rock, Plazas Island, Galápagos Islands, March 7, 1966

Mangrove Roots, [Bear Lake Trail], West Lake, Everglades National Park, Florida, February 24, 1974

Cliffs at Buccaneer Cove, Santiago Island, Galápagos Islands, April 12, 1966

Geospiza scandens, Academy Bay, Santa Cruz Island, Galápagos Islands, April 30, 1966

Flightless Cormorants, Punta Espinosa, Fernandina Island, Galápagos Islands, April 8, 1966

Swallowtail Gulls, Punta Pitt, San Cristóbal Island, Galápagos Islands, May 24, 1966

Sunset from Sombrero Chino Anchorage, Bainbridge Island, Galápagos Islands, March 25, 1966

Red-footed Booby, Tower Island, Galápagos Islands, March 22, 1966

Frigate Birds Displaying, Red-Footed Booby, Tower Island, Galápagos Islands, March 23, 1966

Mockingbirds on Dead Seal, Punta Cevallos, Hood Island, Galápagos Islands, May 26, 1966

Galápagos Hawk, Defending Nest, Buccaneer Cove, Santiago Island, Galápagos Islands, May 10, 1966

Galápagos Tortoise, El Chato Area, Santa Cruz Island, Galápagos Islands, April 20, 1966

Dendroica Petechica Feeding on Beach, Punta Suarez, Hood Island, Galapagos Islands, May 28, 1966

Flowers on Theater Slope, Delphi, Greece, April 22, 1967

Flowers in Wall, Delphi, Greece, April 22, 1967

Lava Lizard, Academy Bay, Santa Cruz Island, Galápagos Islands, April 27, 1966

Galapagos Albatrosses Mating, Punta Suarez, Hood Island, Galapagos Islands, May 29, 1966