The Newport Historical Society found a faded, hand drawn map with torn edges among the papers of John Austin Stevens. Papers that have sat undisturbed since the 1940s. Stevens founded the Sons of the Revolution in 1876 to preserve the history of the Revolutionary War. John Austin Stevens' grandfather was Ebenezer Stevens who served in the Revolutionary War.

Did General Washington hold this map in his hands during the critical winter at Valley Forge that many historians consider the turning point in the American Revolution?

History Detectives host Wes Cowan is on the case, featuring their rare document expert John Reznikoff of University Archives.

Watch this fascinating segment now: http://www.pbs.org/opb/historydetectives/investigation/valley-forge...