Chicago World Trade Center 2,300 feet, would have been completed in the late 1980's. There is almost nothing known publicly about this proposal other than its name, the architect (Bruce Graham, architect of both the Sears Tower and Hancock Center) and the developer, Stanely Raskow. As such this preliminary render is almost completely hypothetical. The location is almost certainly wrong. Parts of the tower itself have been surmised. The facade is generic. Inspite of all that, is is still an impressive sight to behold. I'm currently researching the tower with the help of a couple others. When and if something is turned up, the model will be altered accordingly.
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Ground shot from 1st National Plaza
Panorama
From the 94th floor Hancock Observatory
From the 103rd floor Sears Skydeck