The Minnesota History Center has been intensely researching the topic for the better part of two years talking to dozens of direct descendents of settlers and native people
http://www.kare11.com/video/default.aspx?bctid=1711471859001
Mendota Mdewakanton Dakota Tribal Community
“Preserving, Protecting and Promoting the Dakota Culture for Future Generations“
The MMDTC is a Tribal 501C3 Org