Which Guitar?

A quick scan of the Lightnin' Hopkins images on the web shows a variety of guitars (most of which are hard to ID). On a Vestapol "Rare Performances" DVD, Lightnin' plays a Gibson acoustic guitar (not sure which model--I'll do some digging). From some preliminary research I've done, it seems like he might not have been all to particular about either the guitar or the tuning, at times playing a rented guitar or one provided to him by the studio.

So a key question to answer: Which guitar can emulate the Lightnin' sound?