2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts natural and artificial lakes in North America only ranked by relative importance, coordinating with river ranking. I... North American Cartographic Information Society.
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2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile represents railroads in North America only. The “basic” railroads at 10m scale are from Commission for Environmental Cooper... North American Cartographic Information Society.
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile depicts single-line drainages for rivers in North America only ranked by relative importance. Includes name and line width ... North American Cartographic Information Society.
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile represents roads in North America only, including preliminary scale ranking and full list of attributes. The “basic” roads ... North American Cartographic Information Society.