Great Northern Blueprint Number X15-303-7, Great Northern Converter Substation - Plan Elevation and Section, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-303-6, Great Northern Converter Substation - Plan, Elevation, Section and List of Material, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet26, Great Northern Converter Substation - Switch Cells 60 Volt Bus Room, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet35, Great Northern Converter Substation- Lighting Details, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet27, Great Northern Converter Substation-25 N O.C.B Cell in Basement, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-300-17, Great Northern Cascade Electrification - Farmers Telegraph and Telephone Company Crossings at Miller, Ninth and Fifth Streets, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X17-300-20, Great Northern Cascade Electrification - Power Line Crossing at Orondo Avenue, Skagit and Spokane Street, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X17-300-8, Great Northern Cascade Electrification - Puget Sound Power and Light Company 2300V. Line Crossing Main Line and Track 14 in Appleyard, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-302-1, Great Northern Converter Substation - 11.5 and 44 KV Outdoor Substation, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-302-3, Great Northern Converter Substation - 11.5 and 44 KV Outdoor Substation, 1928. Other subject categories: Drawing