Covers:

1929:

Leonard Rutherford & John D. Foster

1932:

Ozarkers

1936:

Arthur Smith Trio [crediting Arthur Smith/Alton Delmore, just like most later versions do]

1936:

Prairie Ramblers

1937:

Riley Puckett & Red Jones

1947:

Woody Guthrie & Cisco Houston

1958:

Weavers [out in '03 on Rarities From The Vanguard Vault]

1960:

Webb Pierce

1962:

Green River Boys with Glen Campbell

1963:

Tom Rush

1964:

George Hamilton IV [hit C&W]

1966:

Hank Locklin

1980:

Ricky Skaggs & Toni Rice

1998:

Lyle Lovett [with Alison Krauss]

2007:

Hayseed Dixie