Great Northern Railway Historical Society Blueprint Collection JSBP3926, Moorhead, Minnesota, 1946. Great Northern Blueprint Number 7340-1, Interlocking Tower. New Windows and Enclosing Stair. Authorization for Expenditure 73686. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Interlocking.
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LC Name Authority: https://lccn.loc.gov/n80046693