Maples, Backlighted, Mount Le Conte Trail, Great Smoky Mountains National Park, Tennessee, October 6, 1967

Moose Maple, Trillium Gap Trail, Great Smoky Mountains National Park, Tennessee, October 16, 1967

Hemlock, Roaring Fork Circle Road, Great Smoky Mountains National Park, Tennessee, April 10, 1968

Hemlock, Roaring Fork Circle Road, Great Smoky Mountains National Park, Tennessee, April 10, 1968

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

Bare Tree and Rhododendron, Newfound Gap Road, Great Smoky Mountains National Park, Tennessee, April 22, 1968

View from Trail to Alum Bluffs, Great Smoky Mountains National Park, Tennessee, April 22, 1968

Millipede, Laurel Falls Trail, Great Smoky Mountains National Park, Tennessee, May 10, 1968

Millipede, Laurel Falls Trail, Great Smoky Mountains National Park, Tennessee, May 10, 1968

Fireweed, Santa Fe Basin, New Mexico, July 25, 1951

Aspens and Larkspur, Canjilon Lakes, New Mexico, June 11, 1958

New York City, 1979

Central Park, New York City, 1979

New York City, 1979

Moss and Grass on Cliff, Coast Road to Westport, New Zealand, November 18, 1975

Blueberry Mountain Looking Southwest from Keene, Adirondacks, New York, October 3, 1965

Rocks in Brook, Trillium Gap Trail, Great Smoky Mountains National Park, Tennessee, May 9, 1968

Ferns and Moss on Cliff, Little River Gorge, Great Smoky Mountains National Park, Tennessee, April 25, 1968

Trailing Arbutus, Rainbow Falls Trail, Great Smoky Mountains National Park, Tennessee, April 12, 1968

Spring Forest, Newfound Gap Road, Great Smoky Mountains National Park, Tennessee, April 23, 1968