We do not subscribe to the Chicago Tribune database, but you can visit their website and search their available archives.
Alternatively, we subscribe to Newspaper Source (full-text national and regional newspapers, tv and radio transcripts), which may be of help to you.
Go to the library's website, select Academic Sources, then select A to Z Databases, then find Newspaper Source.
Ancestry.com is not available through our library at this time. However, many public libraries offer it, so you might check with your local public library!