Hubble Space Telescope

Gemini - Steps to the Moon

Praxis Manned Spaceflight Log 1961-2006

Soviet and Russian Lunar Exploration, Brian Harvey (Author)

Apollo: The Lost and Forgotten Missions - Shayler David

Spacelab Payloads

Linking the Space Shuttle and Space Stations: Early Docking Technologies from Concept to Implementation

Space Rescue: Ensuring the Safety of Manned Spacecraft

Gemini 4

NASA's First Space Shuttle Astronaut Selection