Rockfall, Hidden Passage, Glen Canyon, Utah, April 10, 1963

Baltimore Oriole, Male, June 13, 1941

Snowy Egret, Kissimmee Prairie, Florida, April 1954

Snowy Egret, Kissimmee Prairie, Florida, April 1954

Rock Formations, San Juan River, Utah, May 1962

Rock Formations, Glen Canyon, Utah, September 1962

Reeds, Wilson Creek, San Juan River, Utah, May 25, 1962

Pool and Ferns, Mystery Canyon, Glen Canyon, Utah, September 4, 1962

Algae in Spring, near Entrance to Bridge Canyon, Glen Canyon, Utah, April 11, 1963

Northern Parula

Driftwood in Pool, Hall's Creek, Glen Canyon, Utah, September 3, 1962

Pool in the Narrows, Bridge Canyon, Glen Canyon, Utah, September 5, 1962

Rock Formations, San Juan River, Utah, May 1962

Burned Trees and Cliffs, Glen Canyon, Utah, September 1962

Burned Trees and Cliff, Glen Canyon, Utah, September 1962

Sunlit Redbud, Aztec Creek, Glen Canyon, Utah, April 11, 1963

Pools, Upper Bridge Canyon, Glen Canyon, Utah, April 11, 1963

Weathered Stones, Balanced Rock Canyon, Utah, April 12, 1963

Blue and Gold Stream at the Narrows in Bridge Canyon, Glen Canyon, Utah, April 11, 1963

Bryce Canyon, Utah, July-August 1963