I thought I recognized part of the story about the waving girl, and it being at a Savannah lighthouse. Lighthousefriends has the same first half of the story about a lady living with her brother at the Elba Island Lighthouse. (the link will take you to the Cockspur page, scroll down to the story) They also have a story about a drunk falling off the tower at Haig Point when the building was used as a party house after the light was decommissioned.

Interesting how different places adapt a variation of a story to fit their locale. Wonder which version of this one is the correct (or more correct) one?