Phacelia, Moss, Fern, Little River, Middle Prong Road, Great Smoky Mountains National Park, Tennessee, April 21, 1968

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

Moss-covered Stones, Newfound Gap Road, Great Smoky Mountains National Park, Tennessee, April 24, 1968

Water Patterns, Davidson Creek, Pisgah National Forest, North Carolina, May 18, 1968

Tree and Mountain Valley, Great Smoky Mountains National Park, Tennessee, March 11, 1969

Ocean-eroded Sandstone, Cape Kiwanda, Oregon, July 15, 1975

Pine Canyon Creek, Guadalupe Mountains National Park, Texas, May 13, 1977

Noctilucent Clouds Over Mount Baker, Washington, July 30, 1975

Waves, Gulls, Tidal Pool, Second Beach, Olympic Peninsula, Washington, July 26, 1975

Mist and Firs, Rat Trap Pass, North Cascades, Washington, July 29, 1975

Mist and Firs, Rat Trap Pass, North Cascades, Washington, July 29, 1975

Cactus Blossoms, Big Bend, Texas

Oak Tree and Mountainside, Great Smoky Mountains National Park, Tennessee, March 11, 1969

Oak Tree and Mountainside, Great Smoky Mountains National Park, Tennessee, March 11, 1969

Oak Tree and Mountainside, Great Smoky Mountains National Park, Tennessee, March 11, 1969

Sun on Brook, Cades Cove Road, Great Smoky Mountains National Park, Tennessee, June 30, 1968

Cow Lakes, near Jordan Valley, Oregon, July 11, 1975

Dwarf Rhododendron, Charlies Bunion, Great Smoky Mountains National Park, Tennessee, June 29, 1968

Maples and Firs, Hoh Rain Forest, Olympic Peninsula, Washington, July 24, 1975

Cloud Forming Over Mount Rainier, Washington, August 2, 1975