I recently attended a talk by a Rutgers alumni who has been studying Cheyenne, a Plains Algonquian language, for six years. Her dissertation was on evidentiality and gives a brief overview of the grammar, which I thought was interesting. It can be found right on her webpage: http://conf.ling.cornell.edu/sem/index.shtml

Also, this conference may be of interest! http://conf.ling.cornell.edu/SULA7/index.html