Gettysburg, Pennsylvania, is a haunted town. It makes sense:  The town has 350 years of triumphs and tragedies in its past. Besides the infamous battle that ravaged the town and surrounding farmland and included one civilian death, Gettysburg was home to a stop on the Underground Railroad and an orphanage run by a woman with a penchant for torturing her charges. Northwest of the town center is my alma mater, Gettysburg College,…