Uncommon spiral-bound NASA report entitled “J-2 Engine Project Development Plan,” 53 pages, 8.25 x 10.5, dated December 1, 1963, prepared by the Engine Project Office at the George C. Marshall Space Flight Center. The front cover features an “Unclassified” stamp dated May 15, 1970, and numerous instances of the word “Confidential” to covers and interior pages struck through in black felt tip. The manual consists of nine sections—Project Summary; Justification, History and Related Work; Technical Plan; Reliability and Quality Assurance Provisions; Management Plan; Management Reporting; Procurement Arrangements; Schedules; and Resource Requirements—and a total of three tables and 21 figures, which include an Engine System Program Plan, a Fuel Turbopump Program Plan, and an Engine System Schematic. In fine condition.