Is this most authentic, and historical museum ever allowed access for a nightly investigation ? If so; how would such a privilege be earned ? Savannah has always been such an intriguing place, and have always felt a connection for some indefinable

It's owned by Historic Savannah Foundation. Call them and ask.

There are night tours available at certain times of the year and occasionally by an third party company. As for independent investigations, I doubt it would be allowed but you can always ask! (I give the night tours of the home so im not just a creep that knows a lot about the house)

You should call them

I agree with Jeanne. Check with the Foundation. They are always open to ways of earning money for maintenance and repairs. Let me know what you find out.