Ghosts aren’t just people who were once alive. They can also be entire towns – thriving communities that now only exist in memory, historical documents or the remnants of old buildings. We learned more about some of these communities from Lisa Russell, author of the book, “Lost Towns of North Georgia.” When a person dies, a part of them can remain with the living. That’s the case for one spirit in Savannah at the Sorrel Weed House Museum. We get a ghost story from the museum’s operation manager,