The Family Maps series by Arphax continues to expand its offerings. There are now 28 of Mississippi's 82 counties represented in their collection with Jefferson Davis county being the newest volume published. I keep telling Greg Boyd that he needs to get Itawamba and Monroe published. Those are the two Mississippi counties where I have the most ancestors. There is a link on the site (or at least there used to be - I didn't double-check today) where you can ask them to notify you when a county in which you have an interest is published.