Nature

At the Sign of the Fox

The Catalpa Expedition

Oxford

Wood Wanderings

A Guide to the Virginia Springs

Friends and Foes in the Australian Bush

3000 Miles in the Great Smokies

Rambles in New Zealand

Tinicum & Eastwick

What is that Plant

The Italian Alp-bee

Terrain Exercises

Literary Pilgrimages of a Naturalist

The Grail Bird

Pathfinder: Recollections of Those Who Served 1942–1971

Our Western Hills: How to reach them; And the Views from their Summits

Water Reptiles of the Past and Present

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

Decharacterization And Degradation Of The Urban Landscape

Cacti And Succulents