Additionally, the following web sites provide online access to such reference maps.
schematic maps (cartograms) that give various states prominence based
on thematic characteristics rather than geography or physical size
Show®World Makes schematic maps (cartograms) that give various countries prominence based on thematic characteristics rather than geography or physical size
Book marks - links about maps and mapping on the internet - updated by Odden, a map curator of Utrecht University.
USGS Map Projection poster
This site gives the key properties, characteristics, and preferred uses of important projections and of those frequently used by mapmakers today.
A Gallery of Map Projections by Paul Anderson
A collection of map projection images and links to useful websites.
Decision Support System for Map Projections of Small Scale Data
A cool interactive tool for selecting an optimum map projection considering various factors.
A public forum for cartography and design.
History of Cartography
Tutorials in the history of cartography.
Geospatial Conversion Tools from the Bureau of Econonomic Geography. Convert length, area, DegMinSec, Scale, Radians, and Time to GPS Seconds.