Turtle Island, by Gary Snyder. or more recently, Tamalpais Walking: Poetry, History, and Prints, By Gary Snyder and Tom Killion and Quiet Light, by John Sex

Turtle Island, by Gary Snyder. or more recently, Tamalpais Walking: Poetry, History, and Prints, By Gary Snyder and Tom Killion and Quiet Light, by John Sexton or Places of Power: The Aesthetics of Technology by John Sexton