Summary: Author Patrick K. O'Donnell returns to the PMML to talk about his book "The Unknowns: The Untold Story of America's Unkown Soldier and WWI'S Most Decorated Heroes Who Brought Him Home."
Summary: Author Patrick K. O'Donnell returns to the PMML to talk about his book "The Unknowns: The Untold Story of America's Unkown Soldier and WWI'S Most Decorated Heroes Who Brought Him Home."