Alan Lomax, 1915-2002
Alan Lomax was one of the twentieth century's great folk-music collectors. You can read the blogpost from NPR Music: Alan Lomax's Massive Archive Goes Online - there's an audio-clip, too.
(The Hands Up for Trad blog has just posted Elizabeth Hepburn's commentary on the story. You can read Elizabeth's commentary here - she quoted the NPR heading:-
Alan Lomax's Massive Archive Goes Online).