Environmentalists & Naturalists

I Married a Ranger

In Brightest Africa

Heroes of To-Day

The Garden Underground

Life's Enthusiasms

The Other “Hermit” of Thoreau’s Walden Pond

Water and Light

Wildlife Wars

Josephine E. Butler: An Autobiographical Memoir

The Life & Legacy of Henry David Thoreau

Lives of Eminent Zoologists, from Aristotle to Linnæus with Introductory remarks on the Study of Natural History

Of Man and Beast

The Autobiography of Charles Darwin