Great Northern Railway Historical Society Blueprint Collection JSBP4864, Sioux City, Iowa, undated. Bridge #1 over the Floyd River. General Plan Including Bill of Material and Dimensions. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP4840, Sioux City, Iowa, 1951. Great Northern Blueprint Number 309-5891-B, Wagon Bridge East of 18th St. Elevation of Proposed Plan "B". Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP4839, Sioux City, Iowa, 1951. Great Northern Blueprint Number 309-5891-A, Wagon Bridge. Elevation View of The Wagon Bridge East of 18th St Proposed Plan "A". Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP3266, Merrill, Iowa, 1940. Great Northern Blueprint Number 283-5297-3, Bridge Number 205.7. General Plan. Authorization for Expenditure 58370. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1256, Doon, Iowa, 1947. Great Northern Blueprint Number 136-4155, Proposed Walks On Bridge Number 164.4. Section. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.