Great Northern Blueprint Number 1633-17-10, map of Trnsmission Line between Leavenworth and Cascade Tunnel Exhibit "J", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-9, map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "I", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-7, map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "G", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-3, map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "C", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-6, map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "F", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-4 , map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "D", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-8, map of Transmission Line between Leavenworth and Cascade Tunnel Exhitit "H", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-1, map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "A", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-2, map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "B", 1908. Other subject categories: Map

Great Northern Blueprint Number 1633-17-5, map of Transmission Line between Leavenworth and Cascade Tunnel Exhibit "E", 1908. Other subject categories: Map