Puddles After Rain, White Canyon, Utah, August 16, 1963

Bryce Canyon, Utah, August 28, 1963

Black Boulders, Notom, Utah, August 24, 1963

Volcanic Dyke, Pagoda Canyon, Utah, August 25, 1963

Bryce Canyon, Utah, August 28, 1963

Seep Stains, Lake Powell, Utah, August 1964

Rocks with Desert Varnish, Lake Powell, Utah, May 1965

Rocks with Desert Varnish, Lake Powell, Utah, May 1965

Waterfall, Davis Gulch, Escalante Canyon, Utah

Poor-Will, Aspen Valley, New Mexico, June 1954

Rufous Hummingbird, Male, Tesuque, New Mexico, 1977

Woodhouse's Jay in Flight, New Mexico

Woodhouse's Jay, Tesuque, New Mexico, March 1961

Anhinga, Taylor Slough, Florida, January 1974

Yellow-billed Cuckoo, Illinois, June 13, 1942

Roseate Spoonbill, Florida Keys, Florida, 1974

Yellow Violets, near Brattleboro, Vermont, April 22, 1957

Vermont, March 1957

Kingbird, Lovells, Michigan, June 23, 1946

Clay-colored Sparrow