About WestChicago.sit This is a StuffIt compressed map for the Mac/WinAPRS programs covering the western suburbs and exurbs of Chicago. It covers a 16-nM radius centered in the Elgin area, and has all road detail, railroad features, and significant bodies of water. Major routes will display as 2-pixel (wider) lines under MacAPRS. Data source is the USGS 100K DLG. Map file name is Western Suburbs.map, with menu name of Western Suburbs. Produced by N0QBF using MacDLG v1.16.