Google Wants You To Complete its U.S. Map http://www.wired.com/epicenter/2011/04/google-maps-us-edit/ Now Users Can Help Edit Google Maps http://blogs.wsj.com/digits/2011/04/19/now-users-can-help-edit-google-maps/ Google Map Maker http://www.google.com/mapmaker Railroad Maps Collection http://memory.loc.gov/ammem/gmdhtml/rrhtml/rrhome.html David Rumsey Historical Map...