Great Northern Railway Historical Society Blueprint Collection JSBP4905, Skykomish, Washington, 1926. Great Northern Blueprint Number X10-218 Sheet 3, Converter Sub Station-110,000 V. Switch Structure. Steel Work - Plan and Elevations. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.
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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.