Great Northern Railway Historical Society Blueprint Collection JSBP9782, Washington, 1921. Great Northern Blueprint Number C /331, Line Characteristics - Leavenworth to Tonga. Map. Authorization for Expenditure 13116. Interstate Commerce Commission Account Number 31, Power Transmission Systems. Other ICC account descriptions: ICC Account Number 31, Transmission Line.
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A Pacific Northwest Railroad Archive subject, encompassing engineering drawings associated with electrification of railroad locomotives and related electric power generation and transmission facilities.