Apollo/Saturn V Space Vehicle Countdown, [Released for AS-506]. NASA/KSC, 11 June 1969. 8.5 x 11 in. The countdown manual for Apollo 11 with a general overview of launch procedures and a step by step time line of events from T- 4 days, 20 hrs., 35 min. to T-0 min. and launch. Abort and emergency procedures are also covered. INSCRIBED WITH MISSION TITLE AND SIGNED BY BUZZ ALDRIN on front cover.