Edward Abbey, John Muir, Gary Snyder, H.D. Thoreau, Robert Service, Basho, Han Shan (duh) Robinson Jeffers, Wendell Berry, Edna St. Vincent Millay. Tom Brown. D.T. Suzuki, Aldo Leopold.
Huge Peter Matthiessen fan too.
Strictly local; I like Lucy Crawfords history of the Whites...