The Navigator: Containing Directions for Navigating the Monongahela, Allegheny, Ohio, and Mississippi Rivers ; with an Ample Account of These Much Admired Waters, from the Head of the Former to the Mouth of the Latter ; and a Concise Description of Their Towns, Villages, Harbors, Settlements, &c. ; with Maps of the Ohio and Mississippi ; to which is Added an Appendix, Containing an Account of Louisiana, and of the Missouri and Columbia Rivers, as Discovered by the Voyage Under Capts. Lewis and Clark