Dolly Parton, Emmylou Harris and Linda Ronstadt to Compile Lost 'Trio' Tracks

The first time Dolly Parton, Emmylou Harris and Linda Ronstadt sang together, they knew they had something special that needed to be captured on record. But with three of the hottest solo careers going in the Seventies, various record label tangles to work through, and a desire to devote the…