Have you found a scholarly book related to your topic? (Or have a recommendation from your advisor?) Try using this book to get ideas for primary sources.
Look at this bibliography from Our Separate Ways: Women and the Black Freedom Movement in Durham, North Carolina. Christina Greene (the author) includes a list of archives that she visited, periodicals she read (e.g. magazines, newsletters), and other sources. If you were studying a related topic, you might be able to use some of the same sources.
Resources to help you decipher handwriting in historical documents: