Pool in a Brook, Pond Brook, New Hampshire, October 4, 1953

Cinnamon Fern and Grass, Silver Lake, New Hampshire, June 12, 1953

Cinnamon Fern, New Hampshire

Viola nephrophylla, White Mountain National Forest, New Hampshire, May 21, 1953

Dogwood Forest, near Carlisle, Pennsylvania, May 14, 1957

Azalea, Blue Mountain, Pennsylvania, May 14, 1957

Iris in Woodland Pool, Old Seney Road, Michigan, June 18, 1973

Wake Robin, Trillium erectum, White Mountain National Forest, New Hampshire, May 19.1953

Rhodora canadense, Silver Lake, New Hampshire, May 25, 1953

Rhodora canadense, Silver Lake, New Hampshire, May 25, 1953

Shackleton's Supplies, 1907-9, Antarctica, January 1976

Koettlitz Glacier, Frozen Pond - Near Royal Society Range, McMurdo Sound, Antarctica, December 1975

Adélie Penguins, First Trip, Torgersen Island, Antarctica, January 1975

Dry Valleys, Antarctica, December 1975

Beardmore Glacier, Transantarctic Mountains, Antarctica, December 1975

Glacial Tongue, Dry Valleys, Antarctica, 1976

Wireless Set, Robert Scott's Hut, Cape Evans, Ross Island, Antarctica, January 1976

Shackleton's Hut, Ross Island, Antarctica, January 1976

Mummified Dog, Scott's Hut, Ross Island, Antarctica, December 1975

Airdevronsix Icefalls, Looking Towards Wright Upper Glacier, Antarctica, 1976