This is a Nominal area choropleth map depictiong the male population in the continental U.S. http://rds.yahoo.com/_ylt=A9G_bDp3ijxJUGMBi7ejzbkF/SIG=12nn8kb6h/EXP=1228790775/**http%3A//www.jsu.edu/depart/geography/mhill/port/tlc/2choropleth.html