Subjects
- Allied Health Personnel -- education5
- Alms-House (Philadelphia, Pa.)1
- Almshouse of the City of New York.1
- Almshouses3
- Almshouses -- organization & administration5
- Alopecia Areata -- epidemiology1
- Altitude Sickness1
- Alzheimer Disease -- therapy1
- Ambler, Daniel C., 1800-1869.1
- Amblyopia3
- Ambulances31
- Ambulances -- history3
- Ambulatory Care1
- American Ambulance Hospital.2
- American Antiquarian Society. Library.1
- American Association for the Relief of the Misery of Battle Fields.1
- American Association of the Red Cross.3
- American Civil War452
- American College of Physicians.1
- American Field Service.8