Alan Lomax's recordings online

Via Open Culture, who apparently posted this ages ago, here is a nearly-complete archive of Alan Lomax's massively important historical field recordings. Used to be, you'd have to wander into some NPR-friendly record store or maybe Barnes & Noble and pick up a CD box set of something like this, lend it to Moby, and never see it again. Well, now you can pop online and search by a few different criteria. It's fascinating.