Map and Profile No. 1, From the Red River to the Rio Grande: explorations and surveys for a railroad route near the 32nd parallel (Capt.…
Captain John Pope’s survey map along the 32nd parallel, from the Red River to the Rio Grande: the Comanche and Kiowa trails, springs and water holes across the Staked Plain and the Pecos country, and the routes of the survey parties.
Source
| Map | From the Red River to the Rio Grande |
|---|---|
| Author | John Pope, Topographical Engineers, 1859 |
| Archive | Library of Congress |
| Rights | Public domain. Published 1859 — before 1931, so public domain in the United States. Evidence |
| Accuracy | About 8 km (RMS 2.1 km at 19 control points). Placed by hand in a map-queue session and approved by a person. If something sits in the wrong place, members can fix it with Fix placement on the map. |
| Method | Placed by hand on the sheet’s own graticule: 19 intersections of its meridians and parallels (30°–34° N, 95°–107° W), read from the scan and warped with a second-order polynomial. See the methodology. |
| Version | 1.0.0, updated 2026-09-30 |
| Covers | Texas, New Mexico, Oklahoma |
Downloads
- Google Earth overlay (KMZ) — free (1.8 MB)
- GeoTIFF, tinted trails, EPSG:4326 (8000 × 3492; QGIS, ArcGIS) — free (6.4 MB)
- Print sheet over today’s map (3600 × 2200 PNG) — free (2.4 MB)
Project Homeland
This map is open for tracing into Project Homeland, one map of the trail network melded from every traced source. Members trace a trail by clicking along it: Trace a trail on the map.
Changelog
- 1.0.0 (2026-09-30): First release: placed by hand at 19 places. From the Native Routes sources register; Library of Congress Geography and Map Division.
Credits
- From the Native Routes sources register; Library of Congress Geography and Map Division
- Georeferencing: Native Routes
- Scan: Library of Congress
Control points
The full list of control points with residuals is in control-points.geojson. Historic names indexed for search: names.geojson.
Something on this map sits in the wrong place? Members can show where with Fix placement on the map — confirmed fixes are tested against the map’s other control points each night and credited here. For anything else, report a problem.
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