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Subjects
- United States3
- Billings, John S. (John Shaw), 1838-1913.1
- District of Columbia1
- Government Hospital for the Insane (U.S.)1
- Hospitals, Federal -- organization & administration1
- Hospitals, Psychiatric -- organization & administration1
- Librarians1
- Military Hygiene1
- Physicians1
- Texas1
- United States. Surgeon-General's Office1
- World War I1