This has been updated in the Esri basemaps: World Topographic, World Street, Dark and Light Canvas reference layers have this historic label of Chicago removed. USBGN has changed the name to Kenosha Metra Station. The Imagery with Labels (or Esri's Boundaries and Places layer) still has Chicago at two scales, but will be updated to correct the label. An alternative to the raster boundaries and places is to use the Esri Vector Basemap Hybrid Reference Overlay layer over the world imagery: http://ess.maps.arcgis.com/home/item.html?id=30d6b8271e1849cd9c3042060001f425 or Imagery Hybrid web map (includes the imagery): http://www.arcgis.com/home/item.html?id=28f49811a6974659988fd279de5ce39f