This should start you on the right foot: NFB, National Film Board of Canada. when you do a search on their site, type in "Acadian exile",as they have 2 long documentaries on the subject.
Then there is the CBC. witch is the Canadian Broadcasting tv in Canada and witch has done "many" documentaries on the subject.
Enjoy your search, at lest this is a good start I hope.

Claude.

IF you are looking for good cajun music in a movie, get BELIZAIRE THE CAJUN, good stuff

I have never seen that movie, I need to.

J'été Au Bal has some good music also.