Topic
- Family23
- Political activity22
- Automobile industry workers20
- Civil rights movements20
- Labor movement20
- Knowledge and learning18
- Legal status, laws, etc16
- Employment14
- Participation, Female14
- Social aspects14
- African Americans12
- Career in automobile industry and trade12
- Design and construction12
- Emigration and immigration12
- Industrial relations12
- Military policy12
- Race relations12
- Working class12
- Officials and employees11
- Automobiles10