Man, I love Lightnin'. There really isn't much on the web. I'll update if I find any more.

There's a little essay here:
http://home.earthlink.net/~thebluesnews/lightn.htm

Here's another:
 http://www.blueflamecafe.com/default.htm

Some lyrics here:
 http://www.geocities.com/BourbonStreet/Delta/2541/bllhopki.htm

Pene Azul, blues pianist