My gaming group in Austin played a one-shot of DFRPG last week!

And being from Lake Jackson, TX, I will recommend the excellent book Ghosts Along the Brazos by Catherine Munson Foster and Ruth Munson, a collection of ghost stories from the Brazos River region of southeast Texas.  It was locally quite famous in my youth.

Oh, actually, when Googling for a link to provide, I found this great list of books containing Texan ghost tales and legends....