Great Northern Authorization for Expediture (AFE) 21006, Cascade Tunnel, Washington, 1912
- US WaBuPNRA D0024A-003-002-CASCADE TUNNELWA-21006
- Item
- August 19, 1912
AFE, Series I, Number 21006, Cascade Tunnel, Washington, August 19, 1912, Additional Transmission Line Poles. Located in folder 'Cascade Tunnel'. Other subject categories: Electrical. Initial cataloger's disposition code: Z, File not retained