Non-Fiction:

John Michael Greer
The long Descent

William R. Catton, Jr.
Overshoot

James Howard Kunstler
The Long Emergency

Dmitry Orlov
Reinventing Collapse

Ran Prieur
Essays

Donella Meadows, David Meadows, Jorgen Randers, and William W. Behrens III
The Limits to Growth (original 1972 edition)

Daniel Quinn
Ishmael
The Story of B
Beyond Civilization

Derrick Jensen
Endgame, Vol. 1: The Problem of Civilization
Endgame, Vol. 2: Resistance

Brian Fagan
The Long Summer: How Climate Changed Civilization

Thom Hartmann
The Last Hours of Ancient Sunlight

E. F. Schumacher
Small is Beautiful: Economics as if people mattered

Crimethinc
Days of War, Nights of Love: Crimethinc for Beginners

Dave Foreman and Bill Haywood
Ecodefense: A Field Guide to Monkeywrenching

Bernard Campbell
Human Ecology: The Story of Our Place in Nature from Prehistory to the Present

William H. Kotke
Garden Planet: The Present Phase Change of the Human Species

Ivan Illich
Toward a history of needs
Tools for Conviviality

John Livingston
Rogue Primate

Jerry Mander
In The Absence of the Sacred

John Zerzan
Running on Emptiness: The Pathology of Civilization
Against Civilization: Readings and Reflections

Bernard James
The Death of Progress

Alan Weisman
The World Without Us

Duane Elgin
Voluntary Simplicity: Toward a Way of Life That Is Outwardly Simple, Inwardly Rich

Fiction:

Ernest Callenbach
Ecotopia
Ecotopia Emerging

James Howard Kunstler
World Made By Hand

Kurt Vonnegut
Welcome to the Monkey House ('Deer in the Works' and 'Tomorrow and Tomorrow and Tomorrow')
Galapagos

Casey Maddox
The Day Philosophy Dies

Edward Abbey
Good News

Philip Wylie
The End of the Dream

John Seymour
Retrieved from the Future

Alex Scarrow
Last Light