Before John Lennon retreated peacefully into private life in 1975, he fought a major legal battle that went under the public radar. Just as his Rock 'n' Roll oldies album hit the market, Morris Levy, the Mob-connected owner of Roulette Records, released Roots, an unauthorized version of the same record. Levy had used rough mixes of John's unfinished Rock 'n' Roll recordings-and claimed the former Beatle had verbally agreed to the...