Okay, I go to school in Lafayette, LA so here's what I know:
Buffalo Trace should be available there, my local liquor store says they can get it in, but they don't normally carry it. The same distributor carries Elmer T and ER SB so those, while also not on their shelves, should be attainable.
I'm not sure if the distributor in NO has been rebuilt yet, but their location in Lafayette is currently operating as the state headquarters for now. I'm guessing that it will take the stores a while to build stock back up.