Subjects
- African American students.1
- African Americans--Employment.1
- African Americans--History--19th century.1
- African Americans--Land tenure.1
- African Americans--Legal status, laws, etc.--California--History--19th century.1
- African Americans--Social Conditions--19th century.1
- African Americans--Virginia.1
- Agricultural equipment.1
- Agricultural laborers--Michigan.1
- Agricultural machinery & implements--Michigan.1
- Agriculture--Michigan.1
- Agriculture.1
- Alternative medicine--United States--History--19th century.1
- Antislavery movements--United States--History--19th century.1
- Antislavery movements--United States.1
- Aqueducts.1
- Arch bridges.1
- Architecture.1
- Armories.1
- Artists--19th century.1