Connecticut Warbler, Female, Ely, Minnesota, July 4, 1962

Connecticut Warbler, Female, Ely, Minnesota, July 4, 1962

Connecticut Warbler, Female, Ely, Minnesota, July 4, 1962

Mourning Warbler, Female, Ely, Minnesota, July 21, 1962

Blackpoll Warbler, Female, East Inlet, Pittsburg, New Hampshire, July 7, 1965

Blue-winged Warbler, Male, Bird Haven, Jackson, Michigan, June 10, 1960

Olive Warbler, Female, Chiricahua Mountans, Arizona, June 9-10, 1959

Olive Warbler, Female, Chiricahua Mountans, Arizona, June 9-10, 1959

Common Rock Wren, Tesuque, New Mexico, June 6, 1962

Red-breasted Nuthatch Flying Away, Male, Great Spruce Head Island, Maine, July 5-7, 1969

Golden-crowned Kinglet, Seney, Michigan, June 25, 1973

Golden-crowned Kinglet

Mountain Bluebird, Male, Tesuque, New Mexico, June 2, 1948

Council Grounds at the Great Treaty of Horse Creek, Scott's Bluff County, Nebraska

Moss on Rock with Aspen Leaves, Maroon Lake Road, Aspen, Colorado, October 4, 1951

Mount Meru, Arusha National Park, Tanzania, Africa, July 7, 1970

Swallowtail Gull and Nest, Plazas Island, Galápagos Islands, March 7, 1966

Elephant Close-Up, Tsavo East, Kenya, 1970

Elephants, Tsavo East, Kenya, Africa, 1970

Flowers and Granite Rock, Samburu National Park, Kenya, June 20, 1970