Not sure how many people saw this upload since the forum crashed soon after I posted it so I am putting it back up. This document is a scan of a Milwaukee Road engineering department track plan from 1970. It shows the Deering Line which once served the IH Deering Harvester plant and later Cotter & Company north of Fullerton.
In 1984 the Deering Line was officially abandoned west of Ashland Avenue. Tracks were in place and not officially abandoned between Ashland and McLean up to 1991 when Dominick Street was rebuilt and the Deering Line was cut back to where it ends today, at Dominick and McLean.
http://chicagoswitching.com/v6/articles/article.asp?articleid=49In time I will scan more track plans and post them.
