Joe,
I thought I'd do a quick check on Sharyn McCrumb, but some of her titles are just too wonderful. Here's a list of all her books, in reading order based on the What Next? page. Many of her books are set in Appalachia, most seem to be mysteries.

Ballad series:
If ever I return, pretty Peggy-O
The hangman's beautiful daughter
She walks these hills
The rosewood casket
The ballad of Frankie Silver
Ghost riders
The songcatcher : a ballad novel

Elizabeth MacPherson mysteries:
Sick of shadows
Lovely in her bones
Highland laddie gone
Paying the piper
The Windsor knot
Missing Susan
MacPherson's lament
If I'd killed him when I met him --
The PMS outlaws

Science Fiction Series:
Bimbos of the death sun
Zombies of the gene pool
Published together as: Bimbos & zombies

Short Story Collections:
Foggy Mountain breakdown and other stories
Our separate days