An American Treasure is a 2018 compilation album and box set of Tom Petty, Tom Petty and the Heartbreakers and Mudcrutch released by Reprise Records on September 28, 2018. The set includes several rare and unreleased songs alongside more obscure album tracks that showcase Petty's songwriting. The majority of the content is Heartbreakers material but there are also several solo songs and some recor... Wikipedia