This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Reconnoissances in the Dacota Country NYPL b. en Heading West Relief shown by hachures and spot heights Shows routes of government explorations from to as well as areas of particular named Indian groups nypl org Scan by NYPL Reconnoissances in the Dacota Country Discovery and exploration Washington bacbfdcccb Maps of North