"Military history"@en . . . . . . . . . . . . . . . . . . "Fire on the river : the defense of the world's longest covered bridge and how it changed the Battle of Gettysburg"@en . "Columbia (Pa.)" . . "Gettysburg Campaign, 1863." . . "Columbia-Wrightsville Bridge (Pa.)" . . "Wrightsville (York County, Pa.)" . . "Lancaster County (Pa.)" . . "1800 - 1899" . . . . "York County (Pa.)" . .