White Mangrove Roots, Cartago Bay, Isabela Island, Galápagos Islands, May 9, 1966

Palo Santo, Cactus and Lichen, Barrington Island, Galápagos Islands, May 21, 1966

Oxidized Brown Lava and Cinder, Bartholomew Island, Galápagos Islands, May 12, 1966

Santa Cruz from Barrington, Barrington Island, Galápagos Islands, May 21, 1966

Sea Lion Basking, Punta Espinosa, Fernandina Island, Galápagos Islands, April 8, 1966

Geospiza scandens, Academy Bay, Santa Cruz Island, Galápagos Islands, April 29, 1966

Fur Seal, Alcedo Camp on Isabela Island, Galápagos Islands, May 6, 1966

Land Iguana, Cartago Bay, Isabela Island, Galápagos Islands, May 8, 1966

Land Iguana Eating Cactus Pad, Barrington Island, Galápagos Islands, May 21, 1966

Land Iguana Eating Cactus Pad, Barrington Island, Galápagos Islands, May 21, 1966

Young Frigate Bird, Pitt Point, San Cristobal Island, Galápagos Islands, May 23, 1966

Frigate Bird Displaying, Tower Island, Galápagos Islands, March 22, 1966

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

Devil's Crown, Onslow Island, Floreana Island, Galápagos Islands, May 31, 1966

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

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

Galápagos Hawk, Adult, Punta Espinosa, Fernandina Island, Galápagos Islands, April 8, 1966

Fur Seal, Alcedo Camp on Isabela Island, Galápagos Islands, May 6, 1966

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

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