I was intrigued by the item on the work of linguistics professor Patricia Cukor-Avila regarding the differences in Texas English throughout the state ("Do all Texans drawl and twang the same?," winter 2012).
In 1974, as an art student at North Texas, I can remember maintaining to members of one art class that there were at least five different Texas "accents" that I could identify, probably more.
The most extreme?
"Ah liyuv in Dellis. It's grite!"
James Gatewood
Corpus Christi