Interesting article about Census TIGER data and USGS: http://gcn.com/articles/2014/11/21/tiger-maps-census-usgs.aspx?s=gcntech_011214 Hallie Pritchett Head, Map and Government Information Library Map and Federal Regional Depository Librarian University of Georgia Libraries Athens, GA 30602 [log in to unmask] 706-542-0664 Map and Government Information Library - http://www.libs.uga.edu/magil/