astroengine writes "On April 13 — the 40th anniversary of the Apollo 13 accident — Bonhams in New York City will auction off pages from the Apollo 13 mission manual, with handwritten notes by flight commander Jim Lovell. I'm thinking the chances of actually outbidding a rich space enthusiast are slim to none, but having a chance at owning a piece of spaceflight history should be popular nonetheless." Here is an item listing page at Bonhams for one of those pages, which, as Gizmodo notes, saved three astronauts' lives.