Environmental Protection

Letters from Australia

The Encantadas

3000 Miles in the Great Smokies

Tinicum & Eastwick

Literary Pilgrimages of a Naturalist

The Grail Bird

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

Morag the Seal

Pearls and Pebbles; or, Notes of an Old Naturalist

The Spell of the Rockies

In Beaver World

The Wilderness Castaways

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

The Nakimu Caves, Glacier Dominion Park

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

Pere Marquette State Park

Deep Lake Mysteries

Environmental Impact

Deep Soil Ecology

Urban Life Challenges