Possible Clues:

• Follower of Guthrie at Woodstock
• Female singer inducted into the Rock and Roll Hall of Fame in 2017
• 'Saigon Bride' singer
• Folksinger who performed after Guthrie at Woodstock
• ''And a Voice to Sing With'' autobiographer
• 'Love Is Just a Four-Letter Word' singer
• Folk singer Joan who had a hit with 'The Night They Drove Old Dixie Down'
• Judy Collins contemporary
• Performer at 1963's March on Washington
• Woodstock artist who performed while six months pregnant