Environmental Protection

Microbes in Air

River Basins of China

Next-Gen Plastics

Wave Patterns Influence

Air Quality Issues

Electric Vehicles

The Nakimu Caves, Glacier Dominion Park

My First Summer in the Sierra (With Original Drawings & Photographs)

Pere Marquette State Park

British Bees An Introduction into the Studies of the Natural History and Economy of the Bees Indigenous to the British Isles

A voyage to Spitzbergen

The Geology of Button Bay State Park

Cactus Forest Drive, Saguaro National Monument

Birds of Britain

Grand Teton: A Guide to Grand Teton National Park, Wyoming

Shoshone National Forest, Wyoming

Whale Primer, with Special Attention to the California Gray Whale

Buster Bear's Twins

The English Lakes

A Thousand-Mile Walk to the Gulf (With Original Drawings & Photographs)