# Frozen study source notices

Overture Maps Foundation, overturemaps.org. Data accessed 14 October 2026; Places release 2026-09-23.1. Attribution and source terms: https://docs.overturemaps.org/attribution/ and https://docs.overturemaps.org/guides/places/.

Per-record provider, source identifier, update time and license fields are preserved in the unchanged raw extract. Providers include Meta, Microsoft, PinMeTo, Krick, RenderSEO, DAC and BrightQuery under CDLA Permissive 2.0; Foursquare under Apache 2.0; AllThePlaces under CC0 1.0, as applicable to each source entry. The accompanying `licenses/` contains full license text and a complete current Foursquare notice snapshot.

Overture's source attribution specifies: Copyright 2024 Foursquare Labs, Inc. All rights reserved. Foursquare data was transformed to the Overture schema; changed 2026-03-18. Preserve that attribution along with the current issuer NOTICE.

Locus transformations: selected eight saved extraction boxes and the food_and_drink hierarchy; selected the recorded source fields; combined records by exact ID without conflicting duplicates; derived tract-level counts, ranks and illustrative shortlist sensitivity. Original source rows and their provenance were not edited. Issuer-confirmed closure exclusions and the restored locked taxonomy rule apply to calculations through separate files, not alterations of source data. Computed pre-correction histories remain explicitly labelled historical. No claim of venue completeness, independent current-status verification of every record, sales prediction or endorsement by a source provider.

U.S. Census Bureau sources: public 2020–2024 ACS five-year table-based Summary Files B01003/B19013 and the aligned 2024 Gazetteer. The originally collected 2025 Gazetteer is superseded and retained only for audit history. Exact source URLs/hashes and exclusions are in the manifests. Census inputs were not substituted with 2026 observations. Source site: https://www.census.gov/programs-surveys/acs/data/summary-file.2024.html.

The compressed frozen-input bundle preserves original bytes and hashes. Compression is storage packaging, not a new data capture or a change in the study population.