21st Century Space Elevators - Advanced Earth-Space Infrastructure: NASA Report on Technology, Plans, Concepts, Materials, Environmental and Safety Issues    by Progressive Management
Price: $9.99 USD. 30960 words. Published on January 4, 2011. .
NASA workshop on space elevators based on the findings from the Advanced Space Infrastructure Workshop on Geostationary Orbiting Tether “Space Elevator” Concepts. A space elevator is a physical connection from the surface of the Earth to a geostationary Earth orbit (GEO) above the Earth 35,786 km in altitude.

Space Primer (AU-18): Comprehensive Spaceflight History and Guidebook, Doctrine, Orbital Mechanics, Military Space, Satellites, Rockets, NASA Programs, Threats, Designs, Operations, Intelligence    by Progressive Management
Price: $9.99 USD. 132550 words. Published on April 12, 2011. .
In what may be the best single-volume introduction to military and civilian space flight, this up-to-date space primer from the Department of Defense provides comprehensive coverage of modern spaceflight principles and practices, with an extensive and authoritative history of military and NASA programs, along with the fundamentals of space.