A number of organizations offer public map data through Google Maps, but finding it can be tricky -- if you even know it exists. That may not be an issue now that Google has just launched its Maps Gallery. The web portal showcases location info from both Google and a slew of its Maps Engine partners, ranging from the World Bank's internet usage stats to National Geographic's historical overlays. This is really just the start of the search firm's map discovery efforts, though. Google tells TechCrunch that it wants to surface public maps in regular search results, and it would also like to draw attention to Maps Engine Lite data created by amateur cartographers.