Tamarack Bog, Passaconaway, New Hampshire, October 7, 1956

Koettlitz Glacier, McMurdo Sound, Antarctica

Ross Sea, Antarctica, January 1976

Argentine Islands, Antarctica, March 1976

Antarctic Peninsula, Antarctica, March 1976

Saguaro and Brittle Bush, Tucson Mountain Park, Arizona, April 23, 1958

Hedgehog Cactus, Turkey Park, Chiricahua Mountains, Arizona, May 14, 1959

Fluted Schist, Lower Grand Canyon, Arizona, June 29, 1967

Concord River, Concord, Massachusetts, October 16, 1952

Skunk Cabbage, near Peekskill, New York, April 12, 1957

Fern Fiddles and Skunk Cabbage, Sherborn, Massachusetts, April 27, 1957

Maple and Birch Forest, Evan's Notch, Maine, May 6, 1961

Shad Bushes, Mount Washington, Massachusetts, May 21, 1961

Lizzie Porter, Southampton, New York, April 1961

Lizzie Porter, Southampton, New York, April 1961

Pine and Birch Trees, Sheffield, Massachusetts, May 19, 1961

New York City, 1979

Indian Pipes, Whiteface, New Hampshire, Ocotber 11, 1956

Blackberry Bushes in Field, Freedom, New Hampshire, October 12, 1956

[New Mexico]