They say they do n't know how many confidential records are on the hard drive . Congressional aides say ` ` more than 100,000 '' Social Security numbers on file . Obama offered a $ 50,000 reward for information leading to its discovery .
Officials say they do n't know how many confidential records are on the hard drive . Congressional aides say `` more than 100,000 '' Social Security numbers on drive . Archives announced a $ 50,000 reward for information leading to its return .