View from Logan Pass, Glacier National Park, Montana - National Parks and Monuments, 1941

View at timberline, dark foreground, light snow capped mountain, gray sky, in Rocky Mountain National Park, Colorado, ca. 1941-1942

Timber Wolf female in falling snow, North America

Veiled Mountains, Glacier National Park, Montana - National Parks and Monuments, 1941

Canyon edge, low horizon, clouded sky, Grand Canyon National Park, Arizona, 1941

Late Fall Yellowstone

Middle Fork at Kings River from South Fork of Cartridge Creek, Kings River Canyon, proposed as a national park, California, 1936

Bubo Scandiacus

Mount Pollux and Mount Castor at dawn, Wilkin Valley, Mount Aspiring National Park, New Zealand

Twilight on lake, UK

Mist in Tongass National Forest, Juneau, Alaska

Noctilucent Clouds Over Earth