The Longstreet Highroad Guide to the Georgia Coast & Okefenokee is a the best guide to the Geogia Coast and it's online too. This is our neck of the woods and a map of the area.
Creighton Island may have a very interesting history. It's about 10 miles north of Hird Island.
The Savannah Morning News, The Brunwick News, and Camden County Tribune and Georgian (St Mary's) are onlne newspapers the cover the Georgia Coast. You might find something interesting in Jacksonville's Florida Times Union too.