Great Northern Railway Historical Society Blueprint Collection JSBP1297, Duluth, Minnesota, 1923. Great Northern Blueprint Number 235-8, Viaduct at 9th Avenue West. Roadway Support at Wharehouse for Viaduct. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.
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LC Name Authority: https://lccn.loc.gov/n79059587