The following is a list of works included in the main project page arranged by the number of bibliographies there in which the works are included.
- Universalism in America: A History, by Richard Eddy;
- Heralds of a Liberal Faith, ed. Samuel Atkins Eliot;
- Transcendental Wild Oats, by Louisa May Alcott;
- An Historical Sketch of the Unitarian Movement since the Reformation, by Joseph Henry Allen;
- A Treatise on Atonement, by Hosea Ballou;
- The Works of William E. Channing, D.D., by William Ellery Channing;
- Ten Great Religions: An Essay in Comparative Theology, by James Freeman Clarke;
- Unitarianism in America, by George Willis Cooke;
- The Complete Works of Ralph Waldo Emerson, introduced by Edward Waldo Emerson, by Ralph Waldo Emerson;
- Boston Unitarianism 1820-1850: A Study of the Life and Work of Nathaniel Langdon Frothingham, by Octavius Brooks Frothingham;
- Transcendentalism in New England, by Octavius Brooks Frothingham;
- Ezra Stiles Gannett: Unitarian Minister in Boston 1824-1871, by William C. Gannett;
- Heads of Unitarian History, by Alexander Gordon;
- The Life and Letters of Edward Everett Hale, by Edward Everett Hale, Jr.;
- Reason in Religion, by Frederick Henry Hedge;
- The Jefferson Bible, by Thomas Jefferson;
- The Story of My Life, by Mary Ashton Rice Livermore;
- The Memoirs of Joseph Priestley, by Joseph Priestley;
- The Social Implications of Universalism, by Clarence Russell Skinner;
- Annals of the American Unitarian Pulpit, by William B. Sprague;
- Memoirs of the Life of Nathaniel Stacy: Preacher of the Gospel of Universal Grace, by Nathaniel Stacy;
- The Story and Significance of the Unitarian Movement, by W. G.Tarrant;
- On the Formation of the Christian Character, by Henry Ware, Jr.;
- The Early Days of Thomas Whittemore: An Autobiography, by Thomas Whittemore;
- The Modern History of Universalism, by Thomas Whittemore;
- Our Unitarian Heritage, by Earle Morse Wilbur;