| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| The Discovery of a World in the Moone Or, A Discovrse Tending To Prove That 'Tis Probable There May Be Another Habitable World In That Planet | Wilkins, John, 1614-1672 | en | 2006-08-23 | ||||
| Other Worlds Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries | Serviss, Garrett Putman, 1851-1929 | en | 2006-05-22 | ||||
| Is Mars habitable? A critical examination of Professor Percival Lowell's book "Mars and its canals," with an alternative explanation | Wallace, Alfred Russel, 1823-1913 | en | Lowell, Percival, 1855-1916. Mars and its canals; Mars (Planet) | 2004-01-01 |