For those who work on Filles du Roy, Filles à Marier and Carignan-Salières soldiers, Migrations site is a very good source. They are currently off-line due to their service provider having had a major disaster happen on their premises, having to do with the fire alarm system that went off and sprayed chemicals all over the place. It will take at least a week before the damage is repaired. You will get a 505 error if you try to access it.