Environmental Protection

John Muir: The Story of My Boyhood and Youth & Letters to a Friend

Some Common Birds Useful to the Farmer

The Strangest Things in the World: A Book About Extraordinary Manifestations of Nature

The Wild Elephant and the Method of Capturing and Taming it in Ceylon

Ferdinand Vandiveer Hayden and the Founding of the Yellowstone National Park

Grand Teton [Wyoming] National Park

Lobo, Rag and Vixen

Whitefoot the Wood Mouse

Our Common Land (and Other Short Essays)

African Nature Notes and Reminiscences

The Land of Little Rain

The Encantadas

HENRY DAVID THOREAU – Ultimate Collection: 6 Books, 26 Essays & 60+ Poems, Including Translations. Biographies & Letters (Illustrated)

God's Country: The Trail to Happiness

Moths of the Limberlost: A Book About Limberlost Cabin

Wild Animals at Home

Eco-Events

Farthest North (Vol. 1&2)

Birds from Coahuila, Mexico

Rodent Control Aided by Emergency Conservation Work