Collier's New Encyclopedia — Maryland (1921)
“ The Chesapeake Bay cuts the State in two parts, and with its principal affluent, the Potomac river, forms the principal water system of the State. The mountains in the W. are divided into three ranges, the Blue Ridge, Appalachian, and Allegheny, and reach an elevation of 3,000 feet. The Atlantic coast has no good harbors, but the bay with its numerous coves and estuaries gives excellent facilities for water transportation. ”
