I posted this some time ago. I have a PDF file of Nunns Of The South. I have it saved on DropBox (online storage). I think I can send an invitation via e-mail and it would be possible to download it.
It is one of the most extensive books on the Nunns in America I've ever come across. One word of warning, if your descendents are from Virginia you may not be in this book, however I have the booklet on Henry county, Virginia Nunns. I found my lineage in that one.