"Dakota Resources: Transcript of William Clark’s Council with the Sioux, 22 May 1807, Saint Louis, Missouri"
https://sdshspress.com/journal/south-dakota-history-35-1/dakota-resources-transcript-of-william-clarkas-council-with-the-sioux-22-may-1807-saint-louis-missouri
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"Dakota Resources: Transcript of William Clark’s Council with the Sioux, 22 May 1807, Saint Louis, Missouri"
