Crossing the Rappahannock: This program will look at the dramatic events of December 11, 1862, as the Union army struggled to get across the Rappahannock. We will take the same view of the event as thousands of soldiers did, watching from the heights of Chatham, above the crossing. With John Hennessy. 60 minutes. Meet at Chatham (120 Chatham Lane, Fredericksburg)