# License

The Data Observatory is a collection of various sources of data with varying licenses. We have worked hard to find you data that will work for the broadest set of use-cases. Please still review the below terms for any dataset you use and please respect the rights of the owners of each dataset. We list below the third-party data sources that are used in the Data Observatory, along with links to the terms governing the use of each.

Name  | Terms link 
-------|---------
ACS   |  https://www.usa.gov/government-works
TIGER   |  https://www.usa.gov/government-works
Zillow Home Value Index | http://www.zillow.com/corp/Terms.htm
Who's on First |  http://whosonfirst.mapzen.com#License
GeoNames  |  http://www.geonames.org/
GeoPlanet  |  https://developer.yahoo.com/geo/geoplanet/
Natural Earth  |  http://www.naturalearthdata.com/about/terms-of-use/
Quattroshapes  |  https://github.com/foursquare/quattroshapes/blob/master/LICENSE.md
Zetashapes  |  http://zetashapes.com/license
Spielman & Singleton  |  http://www.tandfonline.com/doi/full/10.1080/00045608.2015.1052335
Instituto Nacional de Estadistica  |  http://www.ine.es/ss/Satellite?L=0&c=Page&cid=1254735849170&p=1254735849170&pagename=Ayuda%2FINELayout