Crucifix with Dark Christ, Former Franciscan Mission of Muna, Yucatan, Mexico, 1955-1956

Dark-skinned and Light-skinned Images of Saint in Altar Niche, Ixtepec, Oaxaca, Mexico, 1955-1956

Church, Chamula, Chiapas, Mexico, 1955-1956

Maianthemum and Cobweb, Great Spruce Head Island, Maine, June 15, 1969

Seated Christ in Case, Izamal, Yucatan, Mexico, 1955-1956

Virgin of the Immaculate Conception, Flanked by Flower Wreaths, Templo de Jesus, Naranja de Tapis, Michoacan

Soul in Purgatory, Church of Patrocina Maria Santisima, Oaxaca, Oxaca, Mexico, 1955-1956

The Battle of Gettysburg: Pickett's Charge

Indias de la Sierra. Vista del Sactuario [sic] de Na. Sa. de Guadalupe

Tree Root and Rock, Murchison Falls National Park, Uganda, August 10, 1970

Kopjes Rocks and Trees, Kidepo Valley Park, Uganda, August 13, 1970

Tree and Storm Cloud, Kidepo Valley Park, Uganda, August 13, 1970

Storm Over Mountain, Kidepo Valley Park, Uganda, August 12, 1970

Borassas Palms, Kidepo Valley Park, Uganda, August 12, 1970

Topi Carcass, Queen Elizabeth National Park, Ishasha, Uganda, August 3, 1970

Chinstrap Penguins, Couverville Island, First Trip, Antarctica, January 1975

Adélie Penguins, Torgerson Island, Antarctica, January 1976

Crabeater Seal, Palmer Station, Antarctica, February 1976

Flamingos Nests on Crust of Lake Natron, Tanzania, October 15, 1970

Flamingos Nests on Crust of Lake Natron, Tanzania, October 15, 1970