The Lomaxes did not say that Georgia Turner and Bert Morton wrote the lyrics to "The Rising Sun Blues." They collected versions of the lyrics in 1937 from Turner and from Morton (no date given), John A. and Alan Lomax, 1941, "Our Singing Country," pp. 368-369, with music (arranger not noted).
See thread 8592 for a listing of early recordings (posted by Stewie) and a version by Clarence Ashley, some pre-1937. Origin Rising Sun
The Weavers version is in the DT.

Returning to the topic of this thread, has anyone posted the Lead Belly lyrics at Mudcat?
(Ahem, Roger? Anyone?)