- 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 - Includes links on the objectives of the project, a history of the missions, a detailed image gallery, and biographies of the crews.
- Project Gemini Drawings and Technical Diagrams - Blueprint-type drawings of the Gemini spacecraft.
- Project Gemini: A Chronology - NASA book detailing all aspects of Project Gemini, including design, development, and flight tests.
