This is the American Earth
epitomizes what the Sierra Club, since its founding in 1892 by John Muir, has been seeking on behalf of the nation's scenic resources and needs to pursue harder in the times to come. The book is by far the most important work the club has published and the debt is enormous to Ansel Adams for his inspiration of the book, his photographs, and his guidance, and to Nancy Newhall for the organization of the book and the power of its text. It is a stirring book.

It needs to be stirring, stirring of love for the earth, of a suspicion that what man is capable of doing to the earth is not always what he ought to do, of a renewed hope for the wide spacious freedom that can remain in the midst of the American earth.