Red Mangrove Roots, Coot Bay, Everglades National Park, Florida, February 24, 1954

Logs and Fallen Branch, Tamiami Trail, Florida, February 12, 1974

Cabbage Palm Fronds, Corkscrew Swamp, Florida, January 27, 1974

Mangrove Roots, West Lake, Everglades National Park, Florida, February 24, 1974

Mangrove at Limit of Growth, Everglades National Park, Florida, February 24, 1974

Cerro Colorado, Santa Cruz Off Plazas Island, Galápagos Islands, March 7, 1966

Head of Ramesses II from Below, Abu Simbel, Egypt, February 1, 1973

Head of Fallen Colossus of Ramesses, the Ramesseum, West Thebes, Egypt, January 23, 1973

Falcons on Terrace, Abu Simbel, February 1, 1973

Palmetto, Everglades National Park, Florida, February 28, 1974

Palmetto, Everglades National Park, Florida, February 28, 1974

Bromeliads, Corkscrew Swamp, Florida, March 7, 1974

Cliff and Portulaca, Plazas Island, Galápagos Islands, March 6, 1966

Seal Track, Sombrero Chino, Galápagos Islands, March 11, 1966

Seal Track, Sombrero Chino, Galápagos Islands, March 11, 1966

Seal Track, Sombrero Chino, Galápagos Islands, March 11, 1966

Beach and Tidal Pool, Espinosa Point, Fernandina Island, Galápagos Islands, April 7, 1966

Brachycereus on Volcano Rim, Sombrero Chino, Galápagos Islands, March 11, 1986

Surf, Sombrero Chino, Galápagos Islands, March 11, 1966

Ocatia and Palo Santo, Eden Island, Galápagos Islands, March 14, 1966