Hello again!
I prepared Polish version of HillBilly voice set.
Trying to reproduce a specific accent, which belongs to a separate language family, isn't that obvious, so that was quite challenging. Still, I'm glad that I took this one. I'm not sure if it sounds Appalachian enough (I checked some movie with 'mountain people' talks before recording), but it's definitely something new, compared to Default_pl and Russian_pl.
Now the link: [url]https://www.dropbox.com/s/nq6rqdrgjdhn1a1/HillBilly_pl.7z?dl=1[/url]
Please, check it in your free time.
Regards!
EDIT: Published under GNU Free Documentation License 1.2.