Participation in this forum has caused a number of shadowy figures to gain substance, among them are the Lomaxes and Ralph Peer.There remains one spectre. Who was John Hammond? I know he entered into the career of several blues singers, and that he put on a show called "From Spirituals to Swing" which gave an airing to some, such as Sonny Terry and Leadbelly. That is the extend of my knowledge.
(I know I have bent the thread a bit, but it was veering in the direction.)
Murray