"Much like the rest of the nation, South Central Pennsyvlania struggled with slavery. The institution lingered locally for more than fifty years, although it was virtually extinct everywhere else within Pennsylvania. Gradually, antislavery views prevailed. The Appalachian Mountains and the Susquehanna River provided natural cover for fleeing slaves, causing an influx of travel along the Underground Railraod. Locals like WIlliam Wright and James McAllister assisted these runaways while publically advocating to abolish slavery." -- page [4] of cover.