By October 1798 Ludlow had completed surveying the Greenville Treaty line and was ready to begin surveying the Symmes tract in the region of the Great Miami River. Before he could begin surveying this, he needed to have a true north/south meridian from which he could base the remainder of the survey. The Northwest Territory Act had mandated that 5, and not more than 7, states be created from the vast territory Continue reading Sample Chapter – Israel Ludlow Surveys True Meridian That Became Indiana/Ohio State Line