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You can get a good amount of data from UCLA's Hollywood Diversity Report. Linked is the one for 2018, but is seems they do one every year.
So far, I've only been able to find a PDF.
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It's not a big dataset, but you can use
Telecommunications Towers and Antennas
Connecticut General Statutes §16-50dd requires the Connecticut Siting Council to develop, maintain and update on a quarterly basis a Statewide Telecommunications Coverage Database that includes the location, type and height of all telecommunications towers and antennas in the ...
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Open Street Map (OSM) has a tag name=Walmart.
https://wiki.openstreetmap.org/wiki/Tag:name%3DWalmart
Note:
In December 2017 Brandify provided Open Street Map with a database of all Walmart locations, and details This import took place January 2nd, 2018 and used OSM Conflator.
So it's unlikely to have when the store was opened.
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