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Subject
- Aerial cinematography.1
- Charities, Medical.1
- Children with disabilities--Services for.1
- Coal mines and mining--Illinois.1
- Engineering.1
- Illinois Central Railroad Company.1
- Machinery.1
- Medical care.1
- Medicine.1
- Miners.1
- Poliomyelitis.1
- Public health.1
- Railroad tunnels.1
- Strikes and lockouts--Illinois.1
- Tornado damage.1
- Weather.1