| title | creator | language | description | tableOfContents | contributor | subject | created |
| An Enquiry into the Obligations of Christians to Use Means for the Conversion of the Heathens
In Which the Religious State of the Different Nations of the World, the Success of Former Undertakings, and the Practicability of Further Undertakings, Are Cons | Carey, William, 1761-1834 | en | | | | | 2004-03-01 |
| A Full Enquiry into the Nature of the Pastoral (1717) | Purney, Thomas | en | | | | | 2005-03-10 |
| A Short Essay Toward the Improvement of Psalmody
Or, An Enquiry How the Psalms of David Ought to Be Translated into Christian Songs, and How Lawful and Necessary It Is to Compose Other Hymns According to the Clearer Revelations of the Gospel, for the Use | Watts, Isaac, 1674-1748 | en | | | | | 2009-11-06 |
| An Enquiry into the Truth of the Tradition, Concerning the
Discovery of America, by Prince Madog ab Owen Gwynedd, about the Year, 1170 | Williams, John, 1727-1798 | en | | | | Madog ab Owain Gwynedd, 1150-1180?; America -- Discovery and exploration -- Welsh | 2004-11-12 |
| An Enquiry Concerning the Principles of Taste, and of the Origin of our Ideas of Beauty, etc. | Reynolds, Frances, 1729-1807 | en | Augustan Reprint Society, publication number 27 | | Clifford, James L. [Commentator] | | 2004-09-17 |
| An Enquiry Concerning the Principles of Morals | Hume, David, 1711-1776 | en | | | | Ethics; Conduct of life | 2003-08-01 |
| Enquire Within Upon Everything
The Great Victorian Domestic Standby | Anonymous | en | | | | | 2004-01-01 |
| A Practical Enquiry into the Philosophy of Education | Gall, James, 1784?-1874 | en | | | | | 2009-01-13 |