Here's a great old-time fiddle lp presenting field recordings made for the Library of Congress in 1939. You'll hear the music of 10 old-time fiddlers from Mississippi playing in a beautiful archaic southern syle. On many tracks, the fiddlers are accompanied by someone beating straws on the fiddle neck, an old way of providing a back-up rhythm to fiddle music.
I made a pdf file of the 16-page booklet that goes with the lp, with many photographs, notes on the musicians and the tunes they played and some musical annotations.
Download here (zip file of the lp cut in MP3 tracks with pdf of the booklet)