Log books and notes used by Neil Armstrong and Buzz Aldrin during the first lunar landing will be auctioned off at the end of March.
Bonhams in New York will put the two-page log book entry up for sale along with more than 300 aviation and space memorabilia during its "Space History Sale" on March 25.
[PICTURES: Auctioned log book pages and letter]
The two pages from the Apollo 11 log book are from the Primary Guidance and Navigation section. The notes describe the computer procedures used by Armstrong and Aldrin during lunar lift-off.
Each page is signed by Aldrin. Bonhams estimates the log book pages will sell for $70,000 to $90,000.
[RELATED: Full list of Space History Sale items]
The winning bidder will also receive a two-page letter from Aldrin describing the moment-by-moment account of the famous lunar landing.