Environmental Protection

Nestlings

African Nature Notes and Reminiscences

The Yellowstone National Park: Historical and Descriptive

Hampshire Days

Lynton and Lynmouth: A Pageant of Cliff & Moorland

Butterfly Man

Beaver: An Alphabet of Typical Specimens

The Geology of Groton State Forest

Burton Island State Park: Guide to the Interpretive Nature Trail and Hiking Trail

The Grail Bird

Another Summer: The Yellowstone Park and Alaska

Everyday birds: Elementary studies

Global Climate Change

Timber Industry

Whale Industry

Hidden Rivers

Dust Devils

Water Systems

Soil Erosion

Forest Walking