Edmund Hillary and Tenzing Norgay Autographs by: Bill
In 1953 Tenzing Norgay and Edmund Hillary became the first two explorers to reach the summit of Mount Everest. Norgay died in 1986, twenty-two years before Hillary. Hillary is the most well-known of the two, but Norgay's autograph is worth about twice that of Hillary's.
I'm not sure of the collectible value of that particular book, but the average book signed by both is worth as much as $1000.