Here's an overpass turbo query against OpenStreetMap, if anyone was curious:

https://overpass-turbo.eu/s/1UCX

    [out:json][timeout:25];
    {{geocodeArea:Massachusetts}}->.searchArea;
    (
    nwr["amenity"="ice_cream"](area.searchArea);
    nwr["shop"="ice_cream"](area.searchArea);
    );
      out geom;