Northern Parula Warbler, Male, Great Spruce Head Island, Maine, June 22, 1968

Ferns, Moss Dripping Water, Redbud Canyon, San Juan River, Utah, May 25, 1962

Cottonwood Seedlings, Seven Mile Canyon, Glen Canyon, Utah, September 2, 1962

Conchoidal Fractures, Hall's Creek Entrance, Glen Canyon, Utah, September 3, 1962

Rocks, Pool, Algae, Aztec Creek, Glen Canyon, Utah, September 5, 1962

Beginning of Second Narrows, Cathedral Canyon, Glen Canyon, Utah, September 6, 1962

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

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

Redbud in Bloom, Hidden Passage, Glen Canyon, Utah, April 10, 1963

Redbud in Bloom, Hidden Passage, Glen Canyon, Utah, April 10, 1963

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

Northern Parula Warbler, Male, July 2, 1940

Northern Parula Warbler, Male, Great Spruce Head Island, Maine, June 28, 1945

White-throated Sparrow, Female, June 25, 1939

Black-and-white Warbler, Male, Silver Lake, New Hampshire, July 1, 1939 [Mniotilta varia]

Black-throated Green Warbler, July 24, 1940

Olive-backed Thrush, July 25, 1939

Stephen Porter, Tesuque, New Mexico, August 1946

Black-and-white Warbler, Male, July 1, 1940

Redstart, Male, Great Spruce Island, Maine, July 7, 1945