Start with the Library Catalog and some of the big multidisciplinary resources like Academic Search Complete to see what you can find full-text to get a sense of what’s out there on your topic. If it’s at least touched on in these resources you will probably be able to find enough information.
Move on the specialized resources like America History and Life, Project Muse, Historical newspapers, etc.
Look for primary source documents in some of the recommended sources; also check with local or regional archives and special collections.
Don’t hesitate to ask your professor and/or a librarian for research assistance.