Manual produced by the McDonnell Aircraft Corporation entitled “NASA Project Gemini Familiarization Manual for Spacecraft #1," identified as report “SEDR 300” with serial number “222,” dated July 18, 1963. The manual, approximately 65 pages, 8.75 x 11, contains six sections: Spacecraft Mission, Major Structural Assemblies, Cabin Interior Arrangement, Environmental Control System, Cooling System, and Instrumentation and Communication System. The foreword, in part: “The purpose of this manual is to present, clearly and concisely, the description and operation of the Gemini spacecraft systems and major components as installed in spacecraft number oneâ€Â¦The manual is sectionalized by spacecraft systems or major assemblies. Generally, each section contains a system index illustration and a detailed word description of the system, its operation and its major components.” In fine condition.