Cover of MULE SKINNER BLUES in 1940 - on Bluebird; his version was as big a step forward as Elvis' arrangement of Bill's Blue Moon Of Kentucky (see there); lyrically it was a (cleaned-up) step backwards compared to the original
Cover of BULL DOZE BLUES in 1945 - same melody in Rocky Road Blues (see there)
Cover of ROCKY ROAD BLUES in 1945 - new lyrics (without reefer & champagne), just holding on to Arnold's catch phrase and title and delivered more melodious (see: Bull Doze Blues); crediting himself, so did all later covers
Cover of LITTLE OLD LOG CABIN IN THE LANE in 1948 - as Little Cabin Home On The Hill; not crediting Will S. Hays, probably because the copyright had expired (over 70 years)