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Yellowstone National Park, Ranger Naturalist Service

Yellowstone National Park, Ranger Naturalist Service (1938)

Chester Don Powell (American, 1896-1964)
Fort Marion National Monument, St. Augustine, Florida

Fort Marion National Monument, St. Augustine, Florida (1938)

Chester Don Powell (American, 1896-1964)
Grand Canyon National Park, a free government service

Grand Canyon National Park, a free government service (1938)

Chester Don Powell (American, 1896-1964)
Zion National Park, Ranger Naturalist Service

Zion National Park, Ranger Naturalist Service (1938)

Chester Don Powell (American, 1896-1964)
Lassen Volcanic National Park, Ranger Naturalist Service

Lassen Volcanic National Park, Ranger Naturalist Service (1938)

Chester Don Powell (American, 1896-1964)