Two-sided checklist used during training in the Apollo command and service module simulator, 4.75 x 6, dated March 8, 1972, consisting of a procedure for Power Loss on one side and Braking Gates on the reverse. Four pieces of Velcro are affixed to each side, with an ink notation, “CMS 18,” in an unknown hand. In fine condition, with some scattered light toning. RR Auction COA.