In case you're not familiar with Lomax, the Rock Snob dictionary describes him thus:
Lomax, Alan: Archivist, foklorist, and musicologist whose field recordings of indigenous performers in the American backwoods triggered the first wide-scale American appreciation of folk, blues, and traditional music - and by extension, gave National Public Radio a reason to exist. Working in the 30's and 40's under the aegises of CBS Radio and the Library of Congress, for which he was helping compile a folk-song archive, Lomax gave Leadbelly and Muddy Waters their first nationwide exposure. Hanging on 'til 2002, Lomax lived long enough to see his field recordings reconstituted by Moby as a dance hits-cum-advertising jingles.
For more info on the online archive, here's a recent NYTimes article about it: