| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| Birds of the Rockies | Keyser, Leander S. (Leander Sylvester), 1856-1937 | en | Birds; Birds -- Colorado | 2008-07-05 | |||
| Our Bird Comrades | Keyser, Leander S. (Leander Sylvester), 1856-1937 | en | 2008-08-18 |