The Library of Congress Blog posted the following:

“The Library of Congress often provides Bibles from its vast
collections for the use of Members of Congress during their swearing-in
ceremonies. But it is not every day that a president-elect makes the
same request for his inauguration. It is rarer still when that Bible is
the same one upon which Abraham Lincoln first took the oath of office
in 1861. (In fact, as far as we can tell, that Bible has not been used
by a president since Honest Abe himself.)

But that’s exactly what Barack Obama is doing, in keeping with the very Lincolnesque theme of his inauguration…”

Read on…http://www.loc.gov/blog/?p=410