Late Wisconsinan Glacial Border in Pennsylvania

Lines representing the late Wisconsinan glacial border in northwestern and northeastern Pennsylvania as compiled at 1:100,000 scale.本数据集收录了按1:10万比例尺编制的宾夕法尼亚州西北部与东北部的多条威斯康星冰期（Wisconsinan）晚期冰缘界线。