Broom near Queenstown, New Zealand, November 27, 1975

Moss on Stones, Godley Peaks Road, Lake Tekapo, New Zealand, December 1, 1975

New York City, 1979

Ferns and Moss on Bank near Fox Glacier, New Zealand, November 21, 1975

Boulders on Fox Glacier, Westland National Park, New Zealand, November 21, 1975

Rainforest, Milford Sound Road, New Zealand, November 25, 1975

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

Frost in Dead Grass, Conway, New Hampshire, October 12, 1956

Bleached Beech Leaves, Madison, New Hampshire, May 9, 1961

Milkweed, Kensington, New Hampshire, October 15, 1956

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

Shad and Spruce, Newfound Gap Road, Great Smoky Mountains National Park, Tennessee, May 8, 1968

Dogwood and Pine, Mr. Lix's Place, Gatlinburg, Tennessee, April 26, 1968

Azalea vaseae, Blue Ridge Parkway, North Carolina, May 18, 1968

Azalea vaseae, Blue Ridge Parkway, North Carolina, May 18, 1968

Spring Beauty, Wallowa National Forest, Oregon, July 9, 1975

Interior of Devil's Punch Bowl, Oregon, July 15, 1975

Surf on Rocks, Seal Rock, Oregon, July 14, 1975

Brook, Oswald State Park, Oregon, July 16, 1975

Brook, Oswald State Park, Oregon, July 16, 1975