Against Celsus Book 4 By: Origen of Alexandria

Against Celsus Book 5 By: Origen of Alexandria

Against Celsus Book 6 By: Origen of Alexandria

Against Heresies By: Irenaeus

Against Jovinianus By: Saint Jerome

Age of Reason (version 2) By: Thomas Paine

Age of the Puritans Volume 1 By: Various

Age of the Puritans Volume 2 By: Various

Aggressive Christianity: Practical Sermons By: Catherine Booth

Alec Forbes of Howglen By: George MacDonald

All's for the Best By: Timothy S. Arthur

Alvira, the Heroine of Vesuvius By: A. J. (Augustine J.) O'Reilly

American Hero-Myths A Study in the Native Religions of the Western Continent By: Daniel Garrison Brinton

American Lutheranism Vindicated; or, Examination of the Lutheran Symbols, on Certain Disputed Topics Including a Reply to the Plea of Rev. W. J. Mann By: S. S. (Samuel Simon) Schmucker

American Lutheranism Volume 1: Early History of American Lutheranism and The Tennessee Synod By: Friedrich Bente

Amos Huntingdon By: Theodore P. Wilson

Amusement: A Force in Christian Training By: Marvin Richardson Vincent

Amy Harrison or Heavenly Seed and Heavenly Dew By: Unknown

An Apology for Atheism Addressed to Religious Investigators of Every Denomination by One of Its Apostles By: Charles Southwell

An Atheist Manifesto By: Joseph Lewis

An Essay on the Scriptural Doctrine of Immortality By: James Challis

An Exhortation to Peace and Unity By: John Bunyan

An Exposition of the Last Psalme By: John Boys

An Expository Outline of the "Vestiges of the Natural History of Creation" With a Notice of the Author's "Explanations:" A Sequel to the Vestiges By: S. (Samuel) Laing

An Interpretation of Friends Worship By: Jean Toomer

An Open Letter on Translating By: Martin Luther

An Outline of Occult Science By: Rudolf Steiner

Analogy of Religion to the Constitution and Course of Nature By: Joseph Butler

Ancient and Modern Celebrated Freethinkers By: Charles Bradlaugh

And Judas Iscariot Together with other evangelistic addresses By: J. Wilbur (John Wilbur) Chapman

And Thus He Came By: Cyrus Townsend Brady

Andrew Melville Famous Scots Series By: William Morison

Angelic Wisdom about Divine Providence By: Emanuel Swedenborg

Angelic Wisdom Concerning the Divine Love and the Divine Wisdom By: Emanuel Swedenborg

Angels of the Battlefield By: George Barton

Answers to Prayer, from George Müller's Narratives By: George Müller

Ante-Nicene Christian Library: Translations of the Writings of the Fathers Down to A.D. 325 By: Alexander Roberts

Ante-Nicene Christian Library: Translations of the Writings of the Fathers Down to A.D. 325, Volume 2 By: James Donaldson

Apologia By: John Newton

Apologia pro Vita Sua By: John Henry Newman

Apology By: Tertullian

Apology of the Augsburg Confession By: Philipp Melanchthon

Arabian Wisdom By: John Wortabet

Arohanui: Letters from Shoghi Effendi to New Zealand By: Effendi Shoghi

Around the Wicket Gate By: Charles H. Spurgeon

Arrows of Freethought By: George W. Foote

Art of Divine Contentment By: Thomas Watson

Art of Dying Well By: St. Robert Bellarmine

Art of Prophesying By: William Perkins

Ascent of Mount Carmel By: Saint John of the Cross

Assist the Souls in Purgatory By: Benedictine Sisters of Perpetual Adoration

Atheism Among the People By: Alphonse de Lamartine

Atheism in Pagan Antiquity By: A. B. (Anders Björn) Drachmann

Atlantis: The Antediluvian World By: Ignatius Loyola Donnelly

Auguste Comte and Positivism By: John Stuart Mill

Aunt Charlotte's Stories of Greek History By: Charlotte Mary Yonge

Aunt Judith The Story of a Loving Life By: Grace Beaumont

Aunt Madge's Story By: Sophie May

Autobiography and Letters of Orville Dewey, D.D. Edited by his Daughter By: Orville Dewey

Autobiography of a Yogi By: Paramahansa Yogananda