May Apple, near Harrisburg, Pennsylvania, May 13, 1957

Minnow Brook at Blue Mountain Lake, Adirondack Mountains, New York, January 29, 1965

Argentine Island with High Snow Pack, Antarctic Peninsula, Antarctica, March 1976

Elephant Seal, Litchfield Island, Antarctic Peninsula, Antarctica, February 1976

Grandidier Channel, Fog Blocking Sun on Mountains, Antarctica, March 1976

Hero, Heading South Towards Melchior Islands, Antarctica, 1975-1976

Hero, Heading South Towards Melchior Islands, Antarctica, 1975-1976

Hero, Heading South Towards Melchior Islands, Antarctica, 1975-1976

Crabeater Seals, Deception Island, Antarctic Peninsula, Antarctica, February 1976

Crabeater Seals, Deception Island, Antarctic Peninsula, Antarctica, February 1976

Bismarck Strait, Antarctic Peninsula, Antarctica, February 1976

Melchior Island, Antarctic Peninsula, Antarctica, February 1976

Melchior Islands, Antarctic Peninsula, Antarctica, February 1976

Lichen on Rocks, Cormorant Island, Palmer Station, Antarctica, February 14, 1976

King Edward VII and Queen Alexandra, Shackleton's Hut, Antarctica, 1976

Anvers Glacier from the Air, Antarctica, February 1976

Killer Whale (Orca) and Adélie Penguins, McMurdo Sound, Antarctica, January 1976

Blue-eyed Cormorants, Cormorant Island, 1975-1976

Wiencke Island, from Bismarck Strait, Antarctica, March 1976

Mountain Peak, near Bismarck Strait, Antarctica, February 1976