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WikiPedia: Duluth, Minnesota http://www.usatoday.com/news/nation/2003-07-10-cit... http://factfinder.census.gov/servlet/GCTTable?_bm=... http://www.duluthmn.gov/ http://www.dnr.minnesota.gov/snas/sna02000/index.h... //tools.wmflabs.org/geohack/geohack.php?language=v... https://web.archive.org/web/20120328071840/http://... https://archive.today/20200212040115/http://factfi...