Great Northern Blueprint Number X15-300-6, Great Northern Cascade Electrification - R F Johnson and others Wire Crossing 4 Miles West of Depot, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet 7, Great Northern Converter Substation - Arrangement Plan, 1928. Other subject categories: Drawing

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 X17-303-1, Great Northern Cascade Electrification - Details of Running and Yard Tracks Number 11, 12 and 13 West End of Appleyard, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet22, Great Northern Converter Substation - Balcony Conduit Layout Plan and Elevations, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-302-4, Great Northern Converter Substation - 11.5 and 44 KV Outdoor Substation, 1928. Other subject categories: Drawing