Cartographer Bill Rankin decided to explore the many maps of the Midwest, compiling them all into a single image. The final result included more than the census Bureau’s 12 states. It even included other countries. Here's the final map.
Many voices chime in to answer the question “How does one find existing services that implement OGC Web Map Service (WMS), Web Feature Service (WFS), and Web Coverage Service (WCS) interface standards these days?”