| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| Reasonableness of Catholic Ceremonies and Practices | Burke, John J. (John James), 1857-1945 | en | 2010-09-09 | ||||
| On the Advisableness of Improving Natural Knowledge | Huxley, Thomas Henry, 1825-1895 | en | 2001-11-01 |