Swallowtail Gulls, Tower Island, Galápagos Islands, March 22, 1966

Pahoehoe Lava and Green Vegetation, Tower Island, Galápagos Islands, March 23, 1966

Palo Santo on Crater Rim, Tower Island, Galápagos Islands, March 24, 1966

Surf, Sunset, James Bay, James Island, Galápagos Islands, April 11, 1966

Blue-footed Booby, Champion Island, Galápagos Islands, May 30, 1966

Palo Santo and Cactus, Cartago Bay, Isabella Island, Galápagos Islands, May 8, 1966

Obelisk from Hypostyle, Temple of Amun, Karnak, Luxor, Egypt, January 26, 1973

Columns in Forecourt of Amenophis III, Temple of Luxor, Egypt, January 27, 1973

Entrance Gate to Enclosure of Step Pyramid, Saqqara, Egypt, February 3, 1973

Colonnade, North Side, Second Court, Medinet Habu, West Thebes, Egypt, January 24, 1973

The Great Pyramids, Giza, Egypt, February 4, 1973

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

Saw Grass Everglades at Sundown, Shark Valley, Florida, February 13, 1974

Forest Trees, Tortuguero Park, Costa Rica, March 8, 1984

Nefertari by Ramesses's Leg, Court of Ramesses II, Temple of Luxor, Egypt, January 28, 1973

Cereus on Small Island, Vera Cruz Island, Galápagos Islands, March 13, 1966

Lava and Cinder Contact, Sullivan Bay, James Island, Galápagos Islands, March 10, 1966

Old and New Lava with Lichen, Sombrero Chino at James Island, Galápagos Islands, March 11, 1966

An Old Navaho Woman

Kentucky, "Figured Tree"