The Denison Library likely has much of the material you may need. More importantly, the library has useful tools such as both paper and electronic indexes and abstracts which include citations for excellent source materials which may be at Denison or, if not, can be ordered through the Interlibrary Loan Dept. In addition, the library web pages may, in some cases, access the full-text online of some excellent materials. The catalogs of Ohio library's colleges and universities are quite comprehensive. Indexing and abstracting tools are excellent sources for finding scholarly articles, book chapters, newspaper articles and more.
Some general databases are also often good choices.
Finally, consider using databases that are specific either to your individual research topic or that may be specific to this course. See these Subject Guides .