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

Great Northern Blueprint Number X15-302-5, Great Northern Converter Substation - Conduit Plan, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet 38, Great Northern Converter Substation - Conduit Plan and Sections Puget Sound Power and Light Company Station, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet 20, Great Northern Converter Substation - Details of Auxillary Terminal Board Wall and Pull Boxes, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet24, Great Northern Converter Substation - Manhole and Duct Run Location Plan and Conduit Arrangement in Manhole Number 1, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet 11, Great Northern Converter Substation- List of Conduits and Conductors, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet 19, Great Northern Converter Substation- List of Conduits and Conductors, 1928. Other subject categories: Drawing

Great Northern Blueprint Number X15-301 Sheet33, Great Northern Converter Substation- List of Material, 1928. Other subject categories: Drawing