"To some, he was 'Professor Nuts Peterson,' but to the world he was Roger Tory Peterson. [This book] tracks this American artist, activist, and passionate bird lover from his days as a child, to art student, to creator of the Peterson field guides, to global environmentalist. Peterson's guides were revolutionary--simply written and drawn for everyone to enjoy the birds, animals, and plants of the outdoors. Millions of copies have [been] sold to date"--Dust jacket flap.