The emergency checklist from the Apollo 13 aborted moon landing is being auctioned in New York City.
Apollo 13 was cut short when an oxygen tank ruptured. The crew famously radioed: "Houston, we've had a problem."
The checklist will be auctioned at Bonhams New York on Tuesday, the 40th anniversary of the oxygen tank emergency on April 13, 1970. It is estimated to sell for up to 30,000 US dollars.
The Bonhams auction of space history artefacts also includes a patch worn by astronaut Michael Collins on Apollo 11, the first mission that landed humans on the moon on July 20, 1969.
The patch is signed by Collins and the two other Apollo 11 astronauts, Neil Armstrong and Buzz Aldrin. Its presale estimate is up to 60,000 US dollars.