Harold Holzer is one of the country's leading authorities on Abraham Lincoln and the political culture of the Civil War era. A prolific writer and lecturer, and frequent guest on television, Holzer serves as chairman of The Lincoln Bicentennial Foundation.
In chilly weather, Lincoln often wore a dark wool shawl over his shoulders. Many years later Robert Todd Lincoln gave his father's shawl to a friend and it now in the American History collection at The Smithsonian (though not currently on display). In the new movie, Lincoln is seen often wearing a shawl.