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Subjects
- Adult education.1
- Aerial photography.1
- Aeronautics.3
- African Americans -- Civil rights.1
- African Americans -- Georgia -- Work.1
- African Americans -- Michigan.4
- African Americans -- Work.1
- African Americans.3
- Afro-Americans -- Georgia -- Work.1
- Afro-Americans -- Michigan.2
- Aged persons -- Michigan -- Ann Arbor.1
- Aged persons.1
- Aging.1
- Agricultural machinery.1
- Agriculture -- Michigan.3
- Agriculture.1
- Airplane industry -- Michigan -- Willow Run.1
- Airplanes.5
- Airships.1
- American newspapers -- Michigan -- Birmingham.1