Hi Dixie Digger
Must be nice to live so close to a real fort. I would beat feet to knock on every door in the surrounding area in an attempt to get approval to search around the fort. You might also see if the city will give you approval to search the area with some sort of an understanding that you turn over to the city all (most/some) of the historic finds that you locate. I know it is a lot to ask of any TH'er to turn over good finds but I think if you look at the big picture if you get a green light for this site they may give you an OK for another site. I would start with all the local homes and see where that takes you. I wish you all the best of luck. Please post pictures of anything you find.
Dave Mork
'Digger-Dave'
THing4CSA
PS: Remember; Don't leave it in the ground!