Also this might help in the Georgia area:
http://freepages.genealogy.rootsweb.ancestry.com/~gacemete/This is a Georgia Cemetery Volunteer listing. They may already have an effort underway or if not, could possibly start one for you.
it's a great resource for cemeteries in general
For Preservation in general you could contact Robert Mosko-of Mosko Cemetery and Monument Services at:
He is the most knowledgeable person I know when it comes to restoration and preservation of cemeteries and headstones
and last (but far more costly):
Hope this helps!
Peace and blessings,