Great Northern Blueprint Number 1240-31, Great Northern Plan of Crossing of Duluth Mesabe Northern Railway and Great Northern, 1905. Other subject categories: Drawing

Great Northern Blueprint Number 1240-31-2, Great Northern Plan of Crossing of Duluth Mesabe Northern Railway and Great Northern (blueprint), 1905. Other subject categories: Drawing

Great Northern Blueprint Number 1240-31-1, Great Northern Plan of Crossing of Duluth Mesabe Northern Railway and Great Northern, 1905. Other subject categories: Drawing