The concrete elevator was constructed by Tillotson Construction Company-Omaha, NE. I do not have a date that it was completed. A concrete annex was added on the west side of the elevator. Another annex was added west of the first annex. Chalmers & Borton completed it in 1958. I am guessing that the original elevator was constructed either 1948 or 1949.
Tillotson had a signature that a lot of their elevators were built with curved headhouses. They did built some elevators with a square or rectangle headhouse.