WCFL

Chicago, Illinois' AM 1000 WCFL (W Chicago Federation of Labor) went on the air in June 1926.  They were initially listener-supported with broadcasts including music, labor and public affairs programs aimed at working-class listeners.  They eventually became more commercially oriented and by 1965 ran a Top-40 format.  Larry Lujack did afternoons on WCFL from 1972 until 1976.  In 1987 they flipped to Rock with call letters WLUP and then in 1993 switched to Sports as WMVP.