Subjects
- Population Dynamics3
- Prisons -- organization & administration3
- Public Health3
- Public Health -- legislation & jurisprudence3
- Societies, Medical3
- Tracheotomy3
- Yellow Fever3
- American Civil War2
- Boston2
- Braces2
- California2
- Character2
- Charities2
- Chemical Phenomena2
- Child2
- Climate2
- Commerce2
- Communicable Disease Control2
- Correspondence as Topic2
- Education, Medical2