Buffalo Gals
Cathy Fink & Marcy Marxer of DC play Buffalo Gals (with bits of a different song) on two banjos in G.
Two parts. Can be sung in any key but it is usually fiddled in G or A. It is also called Round Town Gals (or Girls). There is an old time version that is a little different.
The Hillbillies, 1926 [utoob] in G.
Peet Seeger [utoob] solo banjo in C.
Slow solo banjo [utoob] in G.
Solo recordings for fiddle lessons at Fiddle Tune Archive. The standard version played slow in key of D (recordings one and two) or faster in key of G (mp3).
Lots of lyrics with autoharp in G [utoob] plus lecture.
Lots of lyrics with guitar in (sorta) D [toneway].
Flatt & Scruggs bluegrass in G [not video].
Cowgirl Wanda Neal on guitar in G [not video].
Old Time Buffalo Gals, slightly different tune in key of A.
Background
Wikipedia history of the song. Jimmy Stuart sung it in the garden scene of this movie. The novel is by Ursula Le Guin [amazon]. Square dance on the Lawrence Welk show [utoob].