Great Northern Railway Historical Society Blueprint Collection JSBP2574, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-51, Machinery Layout at Round House. Plan and Elevations. Authorization for Expenditure 49864. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2575, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-36, Remodeling Round House. Elevations. Authorization for Expenditure 49864. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2576, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-35, Remodeling Round House. Sections. Authorization for Expenditure 49864. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2577, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-37, Remodel Ing Round House. Roof Framing Plan. Authorization for Expenditure 49864. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2578, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-38, Remodeling Round House. Lantern Sash Details. Authorization for Expenditure 49864. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2579, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-34, Remodeling Round House. Plan, Section and Engine Pit. Authorization for Expenditure 49864. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2580, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-45, Remodeling Round House. Heating, Plumbing and Piping. Authorization for Expenditure 49864. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2581, Hillyard, Washington, 1929. Great Northern Blueprint Number 8136-33, Removing 7 Stalls and Building 9 Stalls. General Plan. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2582, Hillyard, Washington, 1930. Great Northern Blueprint Number 8136.33, Engine House. Remove Stall # 1 to # 7 and Build Addition to Stall # 9. Authorization for Expenditure 40864. 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 JSBP2583, Hillyard, Washington, 1930. Great Northern Blueprint Number 8136-47, Piping Changes Stall 20 and 21. Floor Plan and Details. Authorization for Expenditure 41608. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.