Yellow Violets, Rainbow Falls Trail, Great Smoky Mountains National Park, Tennessee, April 12, 1968

Blue Phacelia on Cliff, Road to Walnut Bottoms, Great Smoky Mountains National Park, Tennessee, April 11, 1968

Dwarf Phlox, Great Smoky Mountains National Park, Tennessee, April 21, 1968

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

Trailing Arbutus, Chocorua, New Hampshire, April 29, 1957

New York City, 1979

New York City, 1979

New York City, 1979

I.T. and T., Park Avenue, New York City, 1979

New York City, 1979

New York City, 1979

Birches and Hemlocks in Snow Storm, West Otis, Massachusetts, March 8, 1957

Birches and Hemlock in Snow Storm, West Otis, Massachusetts, March 8, 1957

Mouse Creek Falls, Walnut Bottom Road, Great Smoky Mountains National Park, Tennessee, April 24, 1968

Ferns on Cliff, Walnut Bottom Road, Great Smoky Mountains National Park, Tennessee, April 24, 1968

Trailing Arbutus on Road to Route 129 from Cades Cove, Great Smoky Mountains National Park, Tennessee, April 9, 1968

Shad Tree in Bloom, Walnut Bottom Road, Great Smoky Mountains National Park, Tennessee, April 14, 1968

Black Trunks and New Leaves, Newfound Gap Road, Great Smoky Mountains National Park, Tennessee, April 12, 1968

Forest with Rhododendrons, Road to Walnut Bottoms, Great Smoky Mountains National Park, Tennessee, April 11, 1968

Dead Chestnut, Newfound Gap Road, Great Smoky Mountains National Park, Tennessee, May 8, 1968