Great Northern Railway Historical Society Blueprint Collection JSBP2473, Helena, Montana, undated.
- US MnSpGNR E0045A-003-009-008-007-JSBP2473
- Item
- undated
Part of Great Northern Railway- Blueprint-Authorization for Expenditure Collection
Great Northern Railway Historical Society Blueprint Collection JSBP2473, Helena, Montana, undated. Great Northern Blueprint Number 103.19.01, Crossing with Np Ry. Signaling Diagram. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Interlocking.