DRG

http://egsc.usgs.gov/isb/pubs/factsheets/fs08801.html

This map is known as a Digital Raster Graphic. It is a scanned image of a U.S geological survey.

PLSS

http://www.kokomo.lib.in.us/glhs/history/landsurvey.html

The Public Land Survey System (PLSS). This is a method used in the United States to survey and identify land parcels. 

Scatter Plot

http://psyc.queensu.ca/~frostlab/sun98.html

A Scatter plot is a map mainly utilized in mathematics. It is used to value two variables for a particular set of data. 

Population Profile

http://www.fao.org/docrep/005/y8331e/y8331e05.htm

A population profile shows a  number of people as a function of their age. This particular chart ranges from individuals up to age eighty.

LIDAR

http://nature.berkeley.edu/biometlab/fieldpics.html

Using elevation points, LIDAR data are very detailed. As shown above, are usually used to show detail topographic features. 

Triangular Plot

http://www.improving-visualisation.org/vis/id=241

This is an example of a triangular plot; one that displays data and information in the shape of a triangle. This particular example is a plot displaying textures. 

Box Plot

http://www.stat.sc.edu/webstat/version2.0/graphics/Boxplot.html

A box plot is a map that can depict numerical and graphical data. Above is a box plot depicting data from a scientific study.