Detailed map of a portion of New Mexico Territory, showing the area east of the Rio Grande to the Canadian River.
The map focuses on the roads and rivers in the region and the details surveyed by the exploration party led by James Simpson. Major landmarks on the map include:
- Santa Fe
- Fort Marcy
- Military Station at Vegas, New Mexico
- Pecos River
The map appeared in Report from the Secretary of War, Communicating... the Report and Map of the Route from Fort Smith, Arkansas, to Santa Fe, New Mexico, made by Lieutenant Simpson.