The Mesabi Division file contains clearance diagrams for 10 railway line segments divided at Minneapolis Junction, Minnesota; Coon Creek, Minnesota; Boylston, Minnesota; Duluth, Minnesota; Cass Lake, Minnesota; Brookston, Minnesota; Kelly Lake, Minnesota; Gunn, Minnesota; Virginia, Minnesota; Saint Cloud, Minnesota, Brook Park, Minnesota; Sauk Centre, Minnesota; Cass Lake, Minnesota; Allouez, Wisconsin and Saunders, Wisconsin. Individual segment diagrams appear to have been updated in the period between 1957 and 1969.

The Dakota Division file contains clearance diagrams for 12 railway line segments divided at Saint Cloud, Minnesota; Sauk Centre, Minnesota; Alexandria, Minnesota; Fargo, North Dakota; Grand Forks, North Dakota; Cass Lake, Minnesota; Crookston Junction, Minnesota; Barnesville, Minnesota; Crookston, Minnesota; Noyes, Minnesota; Devils Lake, North Dakota; Tilden Junction, Minnesota; Warroad, Minnesota; Grand Forks, North Dakota; Neche, North Dakota; Grafton, North Dakota; Walhalla, North Dakota; and Winnipeg, Manitoba. Individual segment diagrams appear to have been updated in the period between 1957 and 1969.