Montagnard info

I'm working with a Montagnard refugee family as part of a college class I'm taking, and I have to do a presentation on the service project at the end of the semester. I've been doing some research, and I would be interested to know if anyone out there has any great sites to recommend for more info about Montagnard culture, Montagnards during the war, refugees, or anything else I might find interesting or useful. Please email me any ideas you have. Thanks so much!