Great Northern Railway Historical Society Blueprint Collection JSBP2755, Index, Washington, 1966. Great Northern Blueprint Number 343-6394, Bridge 1744.0. Bridge Across North Fork Skykomish River. Authorization for Expenditure 66.6. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridges and Trestles.

Great Northern Railway Historical Society Blueprint Collection JSBP2754, Index, Washington, 1962. Great Northern Blueprint Number 333-6290, Bridge 1750.9. 4.4 Miles West of Index, Wa, Crossing The Skykomish River. Authorization for Expenditure 62.458. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridges and Trestles.

Great Northern Railway Historical Society Blueprint Collection JSBP2753, Index, Washington, 1917. Undergrade Crossing. For Heybrook Lbr Co. Authorization for Expenditure 3184. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP2752, Index, Washington, 1917. Under Crossing. General Arrangement. Authorization for Expenditure 3066. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP2751, Index, Washington, 1916. Under Crossing. Sketch 0F Bridge (Plan 67.2307). Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP2750, Index, Washington, 1916. Undercrossing. For Heybrook Lbr Co. Authorization for Expenditure 3184. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Engineering Drawing: Widen Parapet, Bridge 436 - Skykomish River, Index, Washington, Line Segment 037, Milepost 1746.4. Sheet 193 - 1375 - 36, 1919.

Great Northern Engineering Drawing: Tie Plan, Bridge 436 - Skykomish River, Index, Washington, Line Segment 037, Milepost 1746.4. Sheet 193 - 1375 - 37, 1920.

Great Northern Engineering Drawing: Tie Details, Bridge 436 - Skykomish River, Index, Washington, Line Segment 037, Milepost 1746.4. Sheet 193 - 1375 - 47, 1954.

Great Northern Engineering Drawing: Tie Details, Bridge 436 - Skykomish River, Index, Washington, Line Segment 037, Milepost 1746.4. Sheet 193 - 1375 - 46, 1954.