Ain't Life a Brook
Before there was Ani diFranco there was Ferron, out of Vancouver. But I checked with Ferron and yes, much of Testimony was written in the late 70s. The documentary Girl on a Road which begins to take account of Ferron's life and work, appeared this year. She is now in Michigan though still of course, very much tied to Vancouver and the Gulf Islands. She has a small music festival now, hence the film above. She has been touring with Bitch these days.
It was Shadows on a Dime that put Ferron on the map.