| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| Communism and Christianism Analyzed and Contrasted from the Marxian and Darwinian Points of View | Brown, William Montgomery, 1855-1937 | en | Communism; Christian socialism; Communism and Christianity | 2009-12-25 | |||
| Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions | Romanes, George John, 1848-1894 | en | Evolution (Biology); Heredity | 2008-03-11 |