Thanks Kat. On the subject of unrecorded early blues artists I'm reminded of a couple anecdotal stories from two well-known figures in the genre. Rev. Gary Davis claimed he learned the version of "Cocaine Blues" he so popularized from a carnival worker in 1905. And In 1903 while waiting for a train in Tutwiler, in the Mississippi Delta, W. C. Handy had the following experience. "A lean loose-jointed Negro had commenced plunking a guitar beside me while I slept... As he played, he pressed a knife on the strings of the guitar in a manner popularized by Hawaiian guitarists who used steel bars....The singer repeated the line three times, accompanying himself on the guitar with the weirdest music I had ever heard." Imagine if we could have gotten those 2 guys recorded. Nevertheless we can determine that Blues music was already being played all over the South at least a generation earlier than the first recordings.