Official NASA memoranda regarding the Saturn Rocket, 8.5 x 11, consisting of a one-page Launch Operations Center memo regarding analysis of the "Umbilical Support Foot for S-II Forward, S-IVB Aft, and Instrument Unit/S-IVB Forward Umbilicals" (May 23, 1963), a 34-page copy of the George C. Marshall Space Flight Center's "Saturn V Design Ground Rules" (September 30, 1963), and packets of copied diagrams pertaining to the "Basic Radio-Telemetry System," "S-IVB Propellant Tank Pressurization System," and "S-IVB Explosive Separation Joint." In very good to fine condition.