My great-grandfather came over from Ireland and worked on a railroad on the east coast for awhile. He later moved to the Twin Cities and worked in the Omaha Shops. I believe this was for the Minneapolis, St. Louis Railway or something like that. Don't have the exact name in front of me. He lost his eye from a spark while on the job. Was some sort of welder/repairman on the steam engines. My mom has all the information on him. Doubt he had any impact on my interest in trains, but hopefully I can find some items from the railroad.
The Omaha Road was an affiliate/subsidiary of the Chicago & North Western. Official name Chicago, Minneapolis, St Paul & Omaha. It was a surprisingly large and extensive railroad in its own right. The main shops were in Hudson WI but that is not far from the Twin Cities. They also had shops and facilities in the Twin Cities themselves. The C&NW Historical Society might have information about him in their archives.
There is an excellent book on the Omaha Road by Stan Mailer, and the C&NW Historical Society regularly has Omaha Road stuff in their quarterly magazine, North Western Lines.