Mine Machinery, Mineral Creek, Colorado, August 6, 1958

Weathered Mangrove Stump, Westlake, Everglades National Park, Florida, March 3, 1954

Aerial Tramway End, Cunningham Creek, Colorado, August 7, 1958

Ash Slough, Kissimmee Prairie, Florida, April 12, 1954

Scott Avenue House, Winnetka, Illinois, April 18, 1942

Spruce Trees, Fish Hawk Point, Great Spruce Head Island, Maine, July 1934

Twin Flower, Linnaea borealis, Great Spruce Head Island, Maine, 1937

Twin Flower, Linnaea borealis, Great Spruce Head Island, Maine, 1937

Erland's House, Eagle Island, Thunderstorm, 1938

View South from Head, Great Spruce Head Island, Maine, May 1938

Bear Island, Maine, 1938

Grand Canyon, May 1940

Eagle Island, Maine, 1937

Elder Flower, Great Spruce Head Island, Maine, 1937

Telea polyphemus Larva, 7-8 Weeks, Pupation Sequence 1, #4, Late Prepupal Resting, Tesuque, New Mexico, September 1960

Chipmunk, Silver Lake, New Hampshire, October 17, 1953

City Hall, Tombstone, Arizona, April 20, 1940

City Hall, Tombstone, Arizona, April 20, 1940

Grass, Dew, Stump, Sherman, Colorado, August 14, 1957

Mine Building, Mineral Creek, Colorado, August 10, 1958