| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| A Budget of Paradoxes, Volume II | De Morgan, Augustus, 1806-1871 | en | Smith, David Eugene, 1860-1944 [Editor] | 2008-08-23 | |||
| A Budget of Paradoxes, Volume I | De Morgan, Augustus, 1806-1871 | en | Smith, David Eugene, 1860-1944 [Editor] | 2007-10-20 | |||
| Paradoxes of Catholicism | Benson, Robert Hugh, 1871-1914 | en | 2005-07-16 |