According to the New Lost City Ramblers Folkways LP ' String Band Instrumentals ':
Maybelle Carter learned the tune from a guitar player at the Old Dominion Barn Dance, Richmond, Virginia in the 1950s.
(Name of the guitarist is not known).

She recorded it the first time in 1963/64 for the 'Smash' Records label
'' Mother Maybelle Carter - Pickin' and Singin' (MGS 27041 /SRS 67041) Possibly it can exist on earlier survived radio
recordings, but I haven't seen it.

Smash LP album info

Smash label history with this LP included

The NLCRs version was learned directly from Maybelle in '63 - soundclip is at Smithsonian Folkways.

Here is Maybelle with Ike Everly playing Victor(y) Rag (matching audio and film)