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- Northwestern Electric Company 132
- Factories 58
- Industrial buildings 58
- Power-plants 58
- Energy industries 50
- Industrial equipment 46
- Electric substations 28
- Electric power distribution 26
- Electric apparatus and appliances 18
- Piping 16
- Electric utilities 14
- Electric lines 13
- Hydroelectric power plant retirement 12
- Hydroelectric power plants 12
- Parade floats 12
- Portland Rose Festival (Portland, Or.) 12
- Streets 11
- Electric switchgear 10
- Electric machinery 8
- Women 8