diff --git a/docs/nps-resources.adoc b/docs/nps-resources.adoc
index 6953184..51fa4e9 100644
--- a/docs/nps-resources.adoc
+++ b/docs/nps-resources.adoc
@@ -280,3 +280,16 @@ Two things worth noting from v4:
 * Confirmed *not* a source for basemap tiles we could use — same
   `nps-parkTiles*` naming and same underlying Mapbox Atlas-licensed data
   pipeline as npmap5's Park Tiles (see <<park-tiles>>).
+
+== Data tooling (not adopted)
+
+https://github.com/nationalparkservice/national-dataset-query — a
+Node.js *CLI tool*, not a browser library (different category from
+everything else in this doc): pulls data from ArcGIS/ESRI REST endpoints
+and converts it to GeoJSON/GeoJSONSeq/GeoPackage. Would only be relevant
+if we ever wanted to bake a specific ArcGIS-hosted dataset into an
+offline extract — the same role `data/offline.pmtiles` already plays for
+OSM-derived data, just a different source. No current need, and unlike
+everything else in this doc (CC0, BSD, MIT, public domain) this repo has
+**no `LICENSE` file at all** — its terms are genuinely unclear, so treat
+that as a blocker too, not just "no use case yet."