NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Lewis and Clark, and River Navigation
From: Jared Sherman
Date: 2003 Dec 2, 22:42 -0500
From: Jared Sherman
Date: 2003 Dec 2, 22:42 -0500
The entire range of USGS topographic maps, which are "the" definitive mapping of the US, are available online interactively at http://www.topozone.com with a wide range of scales and all three ranges of base maps available.