Great Northern Blueprint Number 8024 Sheet 22, Great Northern Mail and Express Building Extension to Mailroom, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8024 Sheet 23, Great Northern Mail and Express Building Jumbo Elevator, undated. Other subject categories: Drawing

Great Northern Blueprint Number 7934-12, Great Northern Minneapolis Union Depot, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8133-31, Great Northern Wiring and Heating Powerhouse Great Northern Depot, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8024 Sheet 24, Great Northern Mail and Express Building, Otis Elevator Company, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8133-30, Great Northern Breeching Powerhouse Great Northern Depot, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8024 Sheet 20, Great Northern Mail and Express Building Heating, Lighting and Plumbing, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8024 Sheet 21, Great Northern Mail and Express Building Heating, Lighting and Plumbing, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8024 Sheet 19, Great Northern Mail and Express Building Steel Details, undated. Other subject categories: Drawing

Great Northern Blueprint Number 8024 Sheet 25, Great Northern Mail and Express Building Tile Drawing, undated. Other subject categories: Drawing