Clark W. Thompson was a railroad executive and the head of Indian Affairs for the multi-state Northern Superintendency. He acquired 9,000 acres for $1.25 per acre, and sold it for as much as $80 per acre. His brothers worked with him in Indian affairs, and Benjamin chose the harsh site of the Crow Creek reservation for Dakota removal from Minnesota.
3 U.S. SIGNERS WHO ACCOUNT FOR 9 SIGNATURES ON 7 TREATIES