This project uses the the GeoNames geographical database which is is
available for download free of charge under a creative commons
attribution license.

In particular, the GeoNames database is licensed under the Creative
Commons Attribution 4.0 License:

    https://creativecommons.org/licenses/by/4.0/

Please see the GeoNames web page for more information:

    http://www.geonames.org/about.html
