• A Century of Science, and Other Essays
• American Political Ideas Viewed from the Standpoint of Universal History
• Life Everlasting
• Myths and Myth-Makers: Old Tales and Superstitions Interpreted by Comparative Mythology
• Old Virginia and Her Neighbours, Vol. 1 (of 2)
• The American Revolution
• The Beginnings of New England: Or the Puritan Theocracy in its Relations to Civil and Religious Liberty
• The Critical Period of American History
• The Destiny of Man, Viewed in the Light of His Origin
• The Discovery of America Vol. 1 (of 2): with some account of Ancient America and the Spanish Conquest
• The Idea of God as Affected by Modern Knowledge
• The Unseen World, and Other Essays
• The War of Independence
• Through Nature to God
• Tobacco and Alcohol: I. It Does Pay to Smoke. II. The Coming Man Will Drink Wine.