Collier's New Encyclopedia — Virginia (1921)
“ The W. part of the State is mountainous, the Blue Ridge and Piedmont ranges crossing the State in a S. W. direction, and the Alleghenies forming the boundary of West Virginia. The valley section is a broad belt of rolling country diversified by hills, ridges, and river valleys, lying between the Blue Ridge and Allegheny Mountains. This region contains the valleys of the Shenandoah, Roanoke, James, Kanawha, and Holston rivers. The most important rivers are the Potomac, separating Virginia from Maryland, navigable as far as Alexandria ”
