I found another resource for fur trade researchers through the Centre for Rupert's Land Studies at the University of Winnipeg.
Google "Centre for Rupert's Land Studies," and drop down the left side of the page to "Other Links."
There are tons of fur trade resources on this page, but I was most interested to see a collection of voyageurs contracts at the bottom of page 4, when the list was printed out.
This is the Davies/Scroggie Collection of Voyageur Contracts, held by the Yale University Beinecke Rare Book and Manuscript Library in the Yale Collection of Western Americana, WA MSS-S-2357, Davies/Scroggie Collection of Voyageur Contracts.
There is of course no Beaulieu listed in these contracts, and for the most part the collection is too late to be of interest to descendents of Beaulieu.
There was however more than one familiar name -- and I forwarded some information onto a possible descendent of Alexis Courchene.
This should puzzle him for a while.
You might find one of your voyageur ancestors in this 38 page document -- it's worth while looking at it.