| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| Wild Birds in City Parks Being hints on identifying 145 birds, prepared primarily for the spring migration in Lincoln Park, Chicago | en | 2010-07-09 | |||||
| Micrographia Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses with Observations and Inquiries Thereupon | Hooke, Robert, 1635-1703 | en | 2005-03-29 |