Bracket-bound Rocketdyne J-2S report entitled "Engine Model Specification Oxygen/Hydrogen Liquid Propellant Rocket Engine Rocketdyne Model J-2S," dated March 7, 1969, 132 pages, 9 x 11, issued as report R-2158dS, prepared by Contract Specifications Rocketdyne Engineering. The report contains six sections—Scope; Applicable Documents; Requirements; Quality Assurance Provisions; Preparation for Delivery; and Notes—a total of 32 detailed figures, and a group of eight tables. In very good to fine condition, with obvious signs of use, and some creasing and surface loss to the covers.