Topic
- Oakland University18
- Automobile industry unions16
- Railroad stations16
- Skyscrapers15
- Automobile industry14
- Marygrove College (Detroit, Michigan)14
- Chapels13
- Industrial facilities13
- Automobile industry workers12
- Cities & town12
- Farm produce12
- Farmers' markets12
- Hillsdale College12
- Labor union members12
- Newspaper industry12
- Picketing12
- Produce trade12
- Strikes and lockouts12
- Bicycles10
- Centennial celebrations, etc.10