Fred McDowell - Going Down To The River

Mississippi Fred McDowell absolutely killing it! He started playing slide guitar using his pocket knife. Later, his uncle gave him a beef bone that he used for a while before moving on to a bottle neck that we see him playing with here.

Rev. Gary Davis - Children of Zion

From either 1965 or '66, Reverend Gary Davis on the great Pete Seeger's TV show Rainbow Quest.  In the background looking on are Donovan and Shawn Phillips.