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.

Great Northern Railway Historical Society Blueprint Collection JSBP4904, Skykomish, Washington, 1926. Great Northern Blueprint Number X10-218 Sheet, Converter Sub Station-110,000 V. Switch Structure. Anchor Bolts, etc. 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 JSBP4903, Skykomish, Washington, 1926. Great Northern Blueprint Number Sheet EET 26, Converter Substation. Plan of Hoisting Sling. 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 JSBP4902, Skykomish, Washington, 1926. Great Northern Blueprint Number X10-222 Sheet 5, Converter Sub Station-110,000 V. Switch Structure. Disconnect Switch Support and Brackets. 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 JSBP4901, Skykomish, Washington, 1926. Great Northern Blueprint Number 139-3496-2, Turntable. Truss Bracing Posts. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP4900, Skykomish, Washington, 1924. Great Northern Blueprint Number 11-816, Proposed Toilet Building. Site and Floor Plan, Sections and Details. Authorization for Expenditure 24968. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP4899, Skykomish, Washington, 1923. Toilet Facilities. Round House and Machine Shop. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Roundhouse.

Great Northern Railway Historical Society Blueprint Collection JSBP4898, Skykomish, Washington, 1919. Great Northern Blueprint Number 9-329, Water, Steam, Sewer Pipe, Electric Lights and Hydrants. 6 Stall Round House. Authorization for Expenditure 8023. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Roundhouse.

Great Northern Railway Historical Society Blueprint Collection JSBP4897, Skykomish, Washington, 1919. Great Northern Blueprint Number 8044-4, Door Details. Standard 104' Frame Engine House. Authorization for Expenditure 8023. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Roundhouse.

Great Northern Railway Historical Society Blueprint Collection JSBP4896, Skykomish, Washington, 1919. Great Northern Blueprint Number 8044-3, Elevation and Details. Standard 104' Frame Engine House. Authorization for Expenditure 8023. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Roundhouse.