Great Northern Railway Historical Society Blueprint Collection JSBP6712, System Wide, 1921. Great Northern Blueprint Number D/241, Terminal Box for Lead Sheath Cable. Elevations, Section and Details. 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 JSBP8580, Tumwater, Washington, 1927. Great Northern Blueprint Number X8-227-1, Arrangement of Railway Feeder Equipment. Inside of Power-House. 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 JSBP8581, Tumwater, Washington, 1927. Great Northern Blueprint Number X8-227-5, Arrangement and Details Storage Battery Room. Hydro-Electric Plant. 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 JSBP8854, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 18 of 36, Converter Sub-Station. Section M-M. 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 JSBP8855, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 36 of 36, Converter Sub-Station. Oil Piping Details and Track Layout. 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 JSBP8856, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 19 of 36, Converter Sub-Station. Roof 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 JSBP8857, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 10 of 36, Converter Sub-Station. Sections A-A and B-B. 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 JSBP8858, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 12 of 36, Converter Sub-Station. Sections E-E and F-F. 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 JSBP8859, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 21 of 36, Converter Sub-Station. Details of Balcony. 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 JSBP8860, Wenatchee, Washington, 1928. Great Northern Blueprint Number X-15-300, 16 of 36, Converter Sub-Station. Section K-K. Interstate Commerce Commission Account Number 30, Power Substation Buildings. Other ICC account descriptions: ICC Account Number 29, Substation.