Try a CB radio. If your not to far from the park someone
might know. The NRA might help you and if all else fails
do a Startpage search.
http://www.fs.usda.gov/bitterroot
Due to the lapse in agency funding, the sale of all types of permits (i.e., recreation, firewood, forest products, mineral materials for example) are suspended, recreation.gov reservations are suspended, and all federally owned recreation sites are closed. All offices are closed. These services will be available once funding is restored.
Law enforcement, fire suppression, and other essential services will continue without interruption.
One assumes that he already has the license. At least in my neighborhood, the elk licenses are not something you just pick up on the way to the hunt, and most people get them months before season. That posted quote says the SALE of permits has been suspended.
I'd just go.
Long past time for some good ol' Civil Disobedience, anyway.