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Topic
- Northwestern Electric Company 33
- Energy industries 16
- Electric power distribution 15
- Electric substations 15
- Parade floats 14
- Portland Rose Festival (Portland, Or.) 14
- Electric apparatus and appliances 10
- Women 10
- Piping 8
- Electric machinery 6
- Electric switchgear 6
- Men 5
- Crowds 4
- Children 3
- Festivals 3
- Steam-turbines 3
- Boilers 2
- Girls 2
- Pittock Station (Portland, Oregon) 2
- Power-plants 2
