Great Northern Blueprint Number 1240-32-4, Great Northern Sioux City Crossing, undated. Other subject categories: Drawing

Great Northern Technical Drawing 1219-31-9, Crossing Chicago, St. Paul, Minneapolis and Omaha Railway, undated. Other subject categories: Drawing

Great Northern Blueprint Number 1240-32-3, Great Northern Sioux City Crossing, undated. Other subject categories: Drawing

Great Northern Blueprint Number 1249-12-5, map of Block 29, Sioux City, 1911. Other subject categories: Map

Great Northern Blueprint Number 1249-12-6, map of Ordinance Plat Block 29, Sioux City, 1912. Other subject categories: Map

Great Northern Blueprint Number 1249-12-3, map of Ordinance Plat Block 29, Sioux City, 1913. Other subject categories: Map

Great Northern Blueprint Number 1024-17-2, map of Sioux City & Northern Preliminary Location in Minnesota, South Dakato & Iowa, undated. Other subject categories: Right of Way and Track Map