Other
- History 3 results
- Social conditions
- Economic conditions 2 results
- Citizenship 1 results
- Ethnic relations 1 results
- Immigrants 1 results
- Language maintenance 1 results
- Language question in the church 1 results
- Lutherans, German 1 results
- Machinery industry 1 results
- Patriotism 1 results
- Social aspects 1 results
- Trials (Conspiracy) 1 results