Data sources and their licenses
Some restaurant leads: Foursquare OS Places, © Foursquare Labs, Inc., Apache License 2.0 (modified).
Some restaurant locations: © OpenStreetMap contributors, available under the Open Database License (ODbL).
Some restaurant coordinates: St. Louis County GIS Service Center, Address Points (St. Louis County, Missouri). Data provided as is; not an endorsement by St. Louis County.
Some restaurant coordinates: St. Charles County, Missouri GIS. Data provided as is; not an endorsement by St. Charles County.