"Purple Line Exp." . . . . "Purple Line (CTA)" . . "Purple Line Express" . "Evanston" . "Purple Line" . "9" . . . . "1949-07-31" . . "Purple" . "Operational" . "Chicago and Evanston Line" . . "CTA Purple Line" . . . "Evanston Express" . . . . . "Purple line" . "26" . "Purple Line (CTA)" . . . . . "1949" . "Purple Lines" . .