Great Northern Railway Historical Society Blueprint Collection JSBP4457, Seattle, Washington, 1924. Great Northern Blueprint Number X19-222 Sheet 14, Terminal Station - Post Office. 4th Floor Plan. Authorization for Expenditure 26580. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Post Office.

Great Northern Railway Historical Society Blueprint Collection JSBP4458, Seattle, Washington, 1924. Great Northern Blueprint Number X19-222 Sheet 11, Terminal Station - Post Office. 1st Floor Plan. Authorization for Expenditure 26580. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Post Office.

Great Northern Railway Historical Society Blueprint Collection JSBP4459, Seattle, Washington, 1924. Great Northern Blueprint Number X19-222 Sheet 10, Treminal Station - Post Office. Footing Plans and Details. Authorization for Expenditure 26580. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Post Office.

Great Northern Railway Historical Society Blueprint Collection JSBP4460, Seattle, Washington, 1924. Great Northern Blueprint Number X19-222 Sheet 16, Terminal Station - Post Office. King Street and 2nd Avenue Elevations. Authorization for Expenditure 26580. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Post Office.

Great Northern Railway Historical Society Blueprint Collection JSBP4461, Seattle, Washington, 1925. Proposed Open Wharf to Replace Grain Elevator. Plan and Elevations. Interstate Commerce Commission Account Number 21, Grain Elevators. Other ICC account descriptions: ICC Account Number 21, Grain Elevator.

Great Northern Railway Historical Society Blueprint Collection JSBP4463, Seattle, Washington, 1927. Great Northern Blueprint Number X10-212, Remodeling for Universal Car Loading. Site Plan, Floor Plan and Elevations. Authorization for Expenditure 35536. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Freight House.

Great Northern Railway Historical Society Blueprint Collection JSBP4464, Seattle, Washington, 1927. Great Northern Blueprint Number X10-212, Remodeling for Universal Car Loading. Floor Plan, Elevations and Details. Authorization for Expenditure 35536. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Freight House.

Great Northern Railway Historical Society Blueprint Collection JSBP4465, Seattle, Washington, 1927. Great Northern Blueprint Number X8-200, 100' X 200' Warehouse Extension for Wa Coop Egg and Poultry. Piling and Floor Plans and Elevations. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Warehouse.

Great Northern Railway Historical Society Blueprint Collection JSBP4466, Seattle, Washington, 1928. Great Northern Blueprint Number Sheet EET 4A, Office Building. Fourth Floor Plan. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Office Building.

Great Northern Railway Historical Society Blueprint Collection JSBP4467, Seattle, Washington, 1928. Great Northern Blueprint Number Sheet EET 5, Office Building. Roof Plan. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Office Building.