Please note: Highly recommended books are highlighted.
Additional reading lists and resources are included below.
A. H. Almaas
	The Point of Existence
	Luminous Night's Journey

Walter Truett Anderson
	Open Secrets: A Guide to Tibetan Buddhism for
		Western Spiritual Seekers

Arjuna Nick Ardagh
	Relaxing into Clear Seeing

John Blofeld (Translator)
	The Zen Teaching of Huang Po

Dannion Brinkley
	Saved by the Light
	At Peace in the Light

William Buhlman
	Adventures Beyond the Body

Sophy Burnham
	The Ecstatic Journey

Thomas Cleary
	Kensho: The Heart of Zen
	Zen Essence: The Science of Freedom

Ngakpa Chogyam
	Rainbow of Liberated Energy

Chanag Chung-Yuan
	Original Teachings of Ch'an Buddhism

Nona Coxhead
	The Relevance of Bliss: A Contemporary Exploration of
		Mystic Experience

Ligia Dantes
	The Unmanifest Self: Transcending the Limits of
		Ordinary Consciousness

Duane Elgin
	Voluntary Simplicity: An Ecological Lifestyle that
		Promotes Personal and Social Renewal

Frederick Franck
	The Book of Angelus Silesius

Viktor E. Frankl
	Man's Search for Meaning

Norman Friedman
	Bridging Science and Spirit: Common Elements
		in David Bohm's Physics, The Perennial
		Philosophy and Seth

Philip Goldberg
	The Intuitive Edge: Understanding Intuition and
		Applying It in Everyday Life
	
Thich Nhat Hanh
	Being Peace

Douglas Harding
	On Having No Head

Byron Katie
	The Work: The Great Undoing
	What to Do When Nothing Works:
		The Manual for The Work
	Losing the Moon: Byron Katie Dialogues on
		Non-Duality, Truth, and Other Illusions,
		Edited by Ellen J. Mack

Jan Kersschot
	Coming Home

Steven Levine
	Who Dies?

Meg Maxwell and Verena Tschudin
	Seeing the Invisible: Modern Religious and Other
		Transcendent Experiences

Franklin Merrell-Wolff
	Experience and Philosophy:
	     A Personal Record of Transformation and a
	     Discussion of Transcendental Consciousness

Dennis Genpo Merzel
	The Eye Never Sleeps: Striking to the Heart of Zen

Ramana Maharshi
	The Spiritual Teaching of Ramana Maharshi

Stephen Mitchell (Editor)
	The Enlightened Mind: An Anthology of Sacred Prose

Richard Moss
	How Shall I Live?
	The I That is We
	The Black Butterfly
	The Second Miracle
	Words That Shine Both Ways

Nisargadatta (See multiple links on AIA's Links page)
	I Am That
	The Experience of Nothingness:
		Talks on Realizing the Infinite
	The Nectar of Immortality: Discourses on the Eternal
	The Ultimate Medicine
	Seeds of Consciousness

Chögal Namkhai Norbu
	The Mirror:  Advice on the Presence of Awareness
	Dzogchen: The Self-Perfected State
	The Cycle of Day and Night: An Essential Tibetan
		Text on the Practice of Contemplation
	Dream Yoga and The Practice of Natural Light
	The Crystal and The Way of Light

Tony Parsons
	The Open Secret

Jerry Stocking (a.k.a. PAX)
	Enlightenment is Losing Your Mind

John Myrdhin Reynolds
	Self-Liberation Through Seeing with
		Naked Awareness

Paul Reps
	Zen Flesh, Zen Bones: A Collection of Zen Writings
		and Pre-Zen Writings

Kalu Rinpoche
	The Dharma

Bernadette Roberts
	The Path to No-Self

Jane Roberts
	The Nature of Personal Reality

Suzanne Segal
	Collision with the Infinite

Gosung Shin
	Zen Teaching of Emptiness

Raymond Smullyan
	The Tao is Silent

Ralph Strauch
	The Reality Illusion:
		How You Make the World You Experience

Sunyata
	Sunyata: The Life and Sayings of a Rare-born Mystic

Shunryu Suzuki
	Zen Mind, Beginner's Mind

Dr. Jill Bolte Taylor
      My Stroke of Insight: A Brain Scientist's Personal Journey

Eckhart Tolle
	The Power of Now

Lao Tsu
	Tao Te Ching

Alan Watts
	This Is It and Other Essays on
		Zen and Spiritual Experience
	The Book On the Taboo Against Knowing Who You Are
	The Joyous Cosmology
	Om: Creative Meditations
	The Way of Liberation: Essays and Lectures on the
		Transformation of the Self
	The Way of Zen
	Talking Zen
	The Wisdom of Insecurity: A Message for an Age of
		Anxiety

William E. Williams
	Unbounded Light: The Inward Journey


Reader Recommendations
Robert Adams: Silence of The Heart
Gangaji: You Are That (Volumes 1 and 2)
Goddard Neville: Power of Awareness
Lama Surya Das: Awakening the Buddha Within
Papaji:  The Truth Is, Wake Up and Roar (Volumes 1 and 2)
Satyam Nadeen: From Onions To Pearls 
Wayne Liquorman (Ram Tzu): Acceptance of What Is

Recommended Reading Lists
Charles Tart: The Professor's Bookshelf

Book Locator Services
Advanced Book Exchange: Rare, Used and Out-of -Print Books
Albris.com: Books You Thought You'd Never Find
BookFinder.com: Open Marketplace for Books Online
Finding Out-of-Print Books (Suggestions from an AIA Reader)