Four score and seven years ago...

At 7pm we go to Chattanooga, Tennessee, the backdrop for ANTIQUES ROADSHOW's look at an heirloom Confederate soldier's sword...an interesting lead in to the continuing American Experience series Abraham and Mary Lincoln: A House Divided. In tonight's episode we examine a major point in the timeline of history...as Mary Lincoln struggles with her grief, Abraham becomes consumed with the nation's Civil War tragedy and issues a defining statement of not only his presidency, but those that follow: the Emancipation Proclamation...9pm