There’s hundreds of these maps, made by Joshua Katz at North Carolina State University. Many follow the westward-sinking Mason-Dixon line here, but many, in fascinating ways, do not. Here’s a link to the project: http://www4.ncsu.edu/~jakatz2/project-dialect.html. Worth many long looks.

      The immediate interest for me was the continuation of the discussion started by Sadie K. Osborne about correct southern usage. From the map it looks like the form I picked is only common along the west-facing coast of Maryland and a big chunk of central Kentucky. Clearly in the green, where my stories have been set, “it’s y’all, all y’all, dammit!” Or “ya’ll.”

plural you

plural you