I'll admit, I'm most familiar with his archival work from owning a copy of Moby's album Play. Moby sampled several of Lomax's recordings on that album, arguably the best known example being a 1937 recording called "Trouble So Hard" by Vera Hall, which Moby remixed into the song "Natural Blues". I've heard the original recording as well as Moby's version, and I have to say, although I like the Moby song, the original has a directness and earnestness that really struck me. Perhaps it's because there was no instrumentation save for Ms. Hall's voice.
_________________
Mediocrity is a petty vice; aspiring to it is a grievous sin.