The book "Tommy Johnson" is currently in the catalogue of Red Lick Records a UK Internet and mail order company specialising in blues CDs and related stuff. www.redlick records.com Also see the book "Chasin' that Devil Music" by Gayle Dean Wardlow, Backbeat Books ISBN 0-87930-552-5 (also at Red Lick) it has a chapter "Leddell Johnson Remembers his Brother Tommy" and a chapter which is an interview with Ishmon Bracey in which he discusses Tommy.("Four, Five Puppies, one little Shaggy Hound")Bracey became a Christian preacher in later life but makes no mention of Johnsons supposed pact with the Devil, a fact that had it been true you would have felt he would mention. I quote from the book: " I was working one day down there on South Street (in 1956.) He, (Tommy)told me to pray for him, and he want to stop, (drinking)but he look like he couldn't. I told him he had to make up his mind and pray too. "Thank the Lord I told him, and he swear that he would. And he wants to be preachin' like I was, he say." So it would appear that Tommy sought redemption from the evil in his life but no specific mention of the Devil.