Ask your parents or teacher for names of people who are experts in your topic. There is a good chance that they will also have private libraries with books and documents related to your topic. Contact them to see if they will let you come to their home to read, and research. If you know the person, and you are trustworthy, they may let you borrow it. Be very careful in using other people's materials and return them promptly.
Many school districts have extensive libraries and media collections housed at a central location.
Often they have minutes of the school board, scrapbooks, photographs, books, videos, and other educational materials which may be useful to a researcher.