These are some more general websites with collections covering a variety of topics, additional primary source collections can be found for your topic through Google.
Newspaper articles can be primary sources if they are of the time period that you are researching on.
When you've found sources, it's time to examine them to ensure that they're helpful for your research.
1. Who is the author/creator? Do they have any biases?
2. What is the content? Was it created with a specific audience in mind?
3. Is it relevant to your topic? What does it answer about the time period?
4. What is the context? What is the significance at the time it was created? How does it connect to other sources you've found?
5. Has it been edited or translated? Has it been altered from the original?
6. Conclusions? What do you learn about the time period from using this source? Does your understanding of the source fit with other scholars’ interpretations, or does it challenge their argument?