Red Maple in New Growth, Roaring Fork Loop Road, Great Smoky Mountains National Park, Tennessee, October 16, 1967

Pool and Moss-covered Rocks, Mount Le Conte Trail, Great Smoky Mountains National Park, Tennessee, October 6, 1967

Ferns and Brown Leaves, Trillium Gap Trail, Great Smoky Mountains National Park, Tennessee, October 16, 1967

Pool with Leaves, Le Conte Brook on Trail to Rainbow Falls, Great Smoky Mountains National Park, Tennessee, October 8, 1967

Concord River, Concord, Massachusetts, October 16, 1952

Concord River, Concord, Massachusetts, October 16, 1952

Central Park, New York City, 1979

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

Red Osier, near Great Barrington, Massachusetts, April 18, 1957

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

New York City, 1979

New York City, 1979

Hepaticas, Central Valley, New York, April 11, 1957

Yellow Violets, near Brattleboro, Vermont, April 22, 1957

New York City, 1979

New York City, 1979

Park Avenue, New York City, 1979

Central Park, New York City, 1979

Brook and Mossy Stones, Roaring Fork Loop Road, Great Smoky Mountains National Park, Tennessee, March 31, 1968

Ferns, Bull Head Trail, Great Smoky Mountains National Park, Tennessee, October 12, 1967