National Railway and the purchase was completed on May 10, 2004. Merger with Wisconsin Central In December 2011, the Duluth, Missabe & Iron Range Railway was merged into Wisconsin Central Ltd., which is also controlled by Canadian National Railway. This merger was intended to increase efficiency. Notes References External links Missabe Railroad Historical Society DM&IR History (Archived on 19 October 2007 from CN website) www.missabe.com/cms/catalog/decals DULUTH, MISSABE, AND IRON RANGE RAILWAY: An Inventory of Its Records at the Minnesota Historical Society Historic American Engineering Record (HAER) documentation, filed under Two Harbors, Lake County, MN: Canadian National Railway subsidiaries Companies based in Minnesota Former Class I railroads in the United States Former regional railroads in the United States Historic American Engineering Record in Minnesota History of Minnesota History of Wisconsin Minnesota railroads Predecessors of the Canadian National Railway Railway companies established in 1937 Transportation in Douglas County, Wisconsin Transportation in Duluth, Minnesota Transportation in Lake County, Minnesota Transportation in St. Louis County, Minnesota Wisconsin railroads Railway companies disestablished in 2011 American companies established in 1937