NASA's Gemini missions (1965-1966) featured longer flights, spacecraft maneuverability, and multiple pilots.
Sites 3
- Project Gemini Drawings and Technical Diagrams Blueprint-type drawings of the Gemini spacecraft.
- On The Shoulders of Titans: A History of Project Gemini History of the Gemini project, the intermediate manned space program between America's first steps into space with Mercury and the manned lunar expeditions of Apollo.
- Project Gemini: A Chronology NASA book detailing all aspects of Project Gemini, including design, development, and flight tests.