| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| The Practical Values of Space Exploration Report of the Committee on Science and Astronautics, U.S. House of Representatives, Eighty-Sixth Congress, Second Session | United States. Congress. House. Committee on Science and Astronautics. | en | 2006-11-24 | ||||
| A History of Aeronautics | en | 1997-04-01 |