The Checklist that Brought Them Home

For sale (click to enlarge):

They are some of the most famous words in the history of the NASA Space Program: "Houston, we have a problem." Now, the Lunar Module Systems Activation Checklist upon which Commander James Lovell made his handwritten calculations to guide his wounded spacecraft and crew home - scant two hours after uttering those famous words - has been consigned by Commander Lovell himself and is expected to bring $25,000+ when it comes across the block as part of Heritage Auctions' Nov. 30 Space Signature(r) Auction.