Environmental Protection

Ontario Teachers' Manuals: Nature Study

Camping with President Roosevelt

A Northern Countryside

The Great White North

The Green God's Pavilion

Ontario Teachers' Manuals: Nature Study

A Leaf from the Old Forest

The Behavior of the Honey Bee in Pollen Collection

Another Summer: The Yellowstone Park and Alaska

Natural History of the Bell Vireo, Vireo bellii Audubon

Yorkshire Dales and Fells

The Wonders of the Jungle, Book Two

Natural History of the Racer Coluber constrictor

The Hills of Hingham

On Cambrian and Cumbrian Hills: Pilgrimages to Snowdon and Scafell

With the Harmony to Labrador

The House of the Trees & Other Poems

A Florida Sketch-Book

Florida Caverns State Park

Wilderness Ways