The Geographic Society of Chicago Message Board › Invite from OpenStreet Meetup Event - this weekend April 20-21,2013
OpenStreetMap Meetup This Weekend
OpenStreetMap is hosting "map-a-thon" this weekend April 20th and 21st at 1871 at the Merchandise Mart in downtown Chicago. the Geographic Society Meetup members are invited to attend. If anyone is interested, please head to the Meetup page here:
OpenStreetMap is the Free wiki map of the world: similar to Wikipedia, it allows anyone to login and modify a map of the world. Users can then download the data they contributed and use it in their own apps and research.