Flown medical checklist carried on board Shuttle Atlantis mission 61B in 1985. Checklist measures 5.5 x 8, is bound with its three original metal rings, and is 10 pages in length plus its two plastic covers. Cover bears a mission insignia and is labeled “Medical Checklist, STS 61-B,” and stamp-dated , “June 5, 1987 Microfilmed.” Three tabs are headed “Drug Side Effects,” “Stowage,” and “Med DSOs.” One page inside lists the side effects of all drugs carried on the shuttle, with several pages dedicated to stowage of the supplies, and also lists the procedures for two medical experiments which were performed during the mission: Leg Plethysmography and two Salivary Pharmacokinetics. Reverse of the back plastic cover retains one square of Velcro used to attach the checklist in the shuttle. Accompanied by a very detailed two page letter of provenance from astronaut Woody Spring, stating that this checklist originates from his personal collection, and explaining the medical training given the astronauts as well as the purposes of the included experiments. In fine condition. RR Auction COA.