Two flown checklist pages, from Jack Lousma’s Orbit Pocket Checklist, carried on board the shuttle Columbia mission STS-3 in March of 1982. First page measures 5.5 x 8 and is the final table of contents page for the priority power down procedure. Second page measures 5.5 x 5.5, numbered 3-7, and lists steps 11 through 23 for an unidentified procedure. Both pages are attached by transparent corner tabs to 11.5 x 8 informational sheets which are attached to identical size boards. In fine condition. Pages were taken from Lousma’s complete flown checklist sold by Heritage in 2011. RR Auction COA.