This would be fun to do throughout the Metropolitan Library System! If there is a significant difference in some of the Pokemon which are caught in different locations, people might want to explore different branches than they usually go to.
"Help your fellow #PokemonGo players in #Shawnee: the library has a board for customers to write down the Pokemon you've found at the library!"
https://www.facebook.com/pioneerlibrarysystem/photos/a.405335581500.1837...
