Rare Lincoln Handwriting In Central Illinois Book

(Clinton, IL) -- A small town library is home to a major piece of history. State historians say President Abe Lincoln's signature is inside the front cover of a book at the Vespasian Warner Library in Clinton. The 700-page book called "Types of Mankind" was published in 1854 and it outlines a theory on why slavery was justified as a part of the natural order. Experts say Lincoln rejected that argument and might have read the book to educate himself on his opponent's case.