Conservationists

The Story of My Boyhood And Youth

John Reid Muir

Unbowed: a memoir

Wangari Muta Maathai.

Travels in Alaska

John Reid Muir

Finding the Mother Tree: Discovering the Wisdom of the Forest

Suzanne Simard

John Muir: My Life With Nature (Sharing Nature With Children Book)

John Reid Muir, Joseph Cornell

The elephant whisperer: my life with the herd in the African wild

Lawrence Anthony with Graham Spence

A zoo in my luggage

Gerald Durrell ; with illustrations by Ralph Thompson

My pride and Joy

George Adamson.

Gerald Durrell: The Authorized Biography

Douglas Botting

Fight for the Forest: Chico Mendes in His Own Words

Chico Mendes