Skip James' bio and music has been discussed extensively when the Stephen Calt biography came out in 1994, next opportunity will be the Scorsese/Wenders project about Skip James, Bl. Willie Johnson and JB Lenoir.
Reading the news about this project I looked around if there's a decent Skip James discography online and found out there ain't - so, once again, I had to build one myself: http://www.wirz.de/music/jameskip.htm
Add'l info /corrections are appretiated !