 One notable exception was "Boss", his unauthorized biography of Chicago's 48th mayor Richard J. Daley, the father of Richard, William, and John P. Daley.In 1976, a Royko column criticized the Chicago Police Department for providing an around-the-clock security for Frank Sinatra.Sinatra responded with a letter calling Royko a "pimp," threatening to "punch you in the mouth" for speculating that he wore a toupée.