I didn't know anything about Violeta Parra, so I went looking. I found a collection of lyrics here (click); recordings here; and a page full of links here (click). Mostly in Spanish, but there's a lot of good stuff to sort through, and your high school Spanish teacher would be proud of you is you spent some time with it.
The Allmusic Guide is usually helpful, but all they have in this case is a (rather extensive) discography (click).
Can anybody furnish biographical information - in English? Click here for a website about the Parra family. The Spanish and German versions are available, but not the English one yet.
-Joe Offer-