The Northern Trust Co., sends me a check each month and has for the past 10 years from 50 S LaSalle St., Chicago, IL. and I put it on my Tax forms, but this time, you

Can you clarify what you are trying to do?  Is this retirement income that is reported on a 1099-R form or income from investments such as items reported on a 1099-INT, 1099-DIV, or 1099-B?  

Assuming you are trying to import this information directly into your TurboTax return, you will need to ensure it is an import partner as listed on this link.  TurboTax only supports Northern Trust (Custody & Investment Mgmt Only) based upon the link.  If your information is from this company, you should be able to import your documents using the instructions in this link.  

If this does not address your question, please comment again with more details so we can assist you based upon your specific situation.