Dot Density Example

The above map is the U.S. Census Bureau's 1980 population dot density map, or what also appears to be their "night time map" due to the fact it looks like the night time illumination one would expect to see with highly developed/urban areas. This map strikes a nice balance in that there is clearly a clustering, almost whiting out, of highly dense areas, but due to the smaller dot size there is not a vast white out effect being produced.