1997. Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:50,000 Topographic Series. United States Geological Survey.
1977. Projection: Lambert Conformal Conic Projection: Standard Parallels -72º40' and -75º20' Lambert Conformal Conic Projection: Standard Parallels -72º4... United States Geological Survey.