From October 16 through October 25, the Historical Society of Pennsylvania will display original treasures from its collection, including watercolor portraits of Hannah and William Penn, a handwritten draft of the U.S. Constitution, the journal of Underground Railroad conductor William Still, and more! Because of their national significance and sensitivity to light and temperature, these documents are rarely displayed. This display—free to attend—is a once-in-a-lifetime opportunity to see all of these national treasures at one time.  For more information…