OK, this thread is at least 8 years old so probably no one looking. However, just in case, there is a nice recording of Farewell Sweet Jane by a duo called Sandy and Jeanie on an eponymous vinyl LP recorded in the late 70's.

It is Jeanie singing unaccompanied on this track. Jeanie, as far as I know, now resides in New Mexico and is in another duo called Bayou Seco.