I am a writer looking for information about cakes specific to certain regions. North Carolina is supposed to have a Lady Baltimore cake (though a lot of North Carolinians have never had one). Kentucky is said to have a mint julep cake. Maryland, where I am from, has something called the Smith Island cake. No one really knows where it comes from (though an elderly cookbook writer thinks she might have invented it), but it's been around for generations.
Some recipes call for seven layers; some call for ten. Individual cakes are made and then sliced thin. The whole thing is usually frosted in chocolate, but sometimes it's filled with chocolate between the layers. Most often, though, the recipes call for crushed candy bars between each layer!
Something I've discovered about regional cakes: some people don't know anything about them. They're usually the people least into food.
I hope you will share your knowledge. It doesn't have to be a recipe, but I'd love to match some cakes with regions.