| 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 |
| Thoughts on the Necessity of Improving the Condition of the Slaves in the British Colonies
With a View to Their Ultimate Emancipation; and on the Practicability, the Safety, and the Advantages of the Latter Measure. | Clarkson, Thomas, 1760-1846 | en | | | | | 2003-12-01 |
| A Succinct View of the Importance and Practicability of Forming a Ship Canal across the Isthmus of Panama | Hill, H. R. | en | | | | Canals, Interoceanic; Panama Canal (Panama) | 2009-06-29 |