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.

Great Northern Railway Historical Society Blueprint Collection JSBP9585, 1908. Great Northern Blueprint Number T.204951, Sections of Main Station. Arrangement. Interstate Commerce Commission Account Number 31, Power Transmission Systems. Other ICC account descriptions: ICC Account Number 29, Transmission System.

Great Northern Railway Historical Society Blueprint Collection JSBP8890, Wenatchee, Washington, 1928. Great Northern Blueprint Number X15-301, Details of Auxiliary Terminal Board Wall Boxes and Pull Boxes. Converter Substation. Interstate Commerce Commission Account Number 31, Power Transmission Systems. Other ICC account descriptions: ICC Account Number 29, Transmission System.

Great Northern Railway Historical Society Blueprint Collection JSBP8889, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 23 of 36, Converter Sub-Station. Details of Cupola. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.

Great Northern Railway Historical Society Blueprint Collection JSBP8888, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 9 of 36, Converter Sub-Station. Basement Sectional Plan. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.

Great Northern Railway Historical Society Blueprint Collection JSBP8887, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 24 of 36, Converter Sub-Station. South Wall Lintel Details. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.

Great Northern Railway Historical Society Blueprint Collection JSBP8886, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 17 of 36, Converter Sub-Station. Section and Details. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.

Great Northern Railway Historical Society Blueprint Collection JSBP8885, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 15 of 36, Converter Sub-Station. Sections and Details. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.

Great Northern Railway Historical Society Blueprint Collection JSBP8884, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 26 of 36, Converter Sub-Station, Window Details. Sections of Windows. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.

Great Northern Railway Historical Society Blueprint Collection JSBP8883, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 14 of 36, Converter Sub-Station. Main Floor Sectional Plan. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.