Government & agency
- U.S. Department of Agriculture (USDA) — Agricultural Marketing Service local food directories, National Agricultural Statistics Service.
- U.S. Forest Service — Recreation site inventories, official trail and access records.
- Bureau of Land Management (BLM) — Public land records and recreation databases.
- U.S. Geological Survey (USGS) — Geographic Names Information System (GNIS), hydrographic and geological registries.
- National Park Service (NPS) — Park-by-park records, ranger publications.
- State Departments of Agriculture — All 50 states, for u-pick farm and agritourism records.
- State and County Tourism Authorities — Official destination listings and verified attraction registries.
- Norwegian Mapping Authority (Kartverket) — Place-name and topographic registries for Aurora Atlas Nordic entries.
- Statistics Norway (SSB) — Official place registers and population data.
- Iceland, Finland, Sweden national mapping & tourism authorities — For aurora-region entries.
Mapping & entity registries
- OpenStreetMap (OSM) — Canonical mapping data; cross-referenced via
sameAson every applicable listing. - Wikidata & Wikipedia — Cross-referenced where the entity has a canonical encyclopedic entry.
- Geonames — Place-name disambiguation and additional cross-references.
Academic & institutional
- University Cooperative Extension services — Land-grant university agricultural and tourism research, particularly for u-pick and seasonal-agriculture entries.
- Geological surveys — State and national surveys for hydrothermal and waterfall data.
- Government meteorological services — For aurora-viewing seasonality and climate context.
Operator-published
Where a listing has an accredited operator (for example, a national park, a certified u-pick farm, an officially designated nature reserve), the operator's published website is consulted directly for hours, access policy, and current operating status. Aggregator websites and unverified directories are not used as primary sources.
What we do not source from
- Other commercial directory websites or aggregators.
- User-generated review platforms as a primary record (we may consult them as one of multiple corroborating signals, never as the source).
- AI-generated content that is not back-checked against primary sources.
- Press releases not corroborated by primary publication.
Sourcing transparency
Where a listing materially depends on a specific source, that source is referenced or linked from the listing's detail page so readers can verify the underlying record.