There are many ways to locate books that are relevant to your research topic:

1. Keep in mind that physical book access may be limited at this time due to the pandemic, but there are many e-books to choose from.
2. Search for books by doing a simple KEYWORD search in Catalyst (in the search box above). Enter words that describe your topic (names, places, events, etc.).
3. When you find a book on your topic, examine its subject headings for relevance to your topic. Click on a hyperlinked subject heading to perform a subject heading search.
4. Conduct a virtual browse at the very bottom of a book record in Catalyst, to discover related titles.
5. You can also look at the bibliography of books you have already identified as useful. 
6. You can also use the advanced search box below to search by subject.

Look here for books and other resources available from many libraries in the United States and some libraries outside of the United States (including foreign language resources, just select the appropriate language from the "Language" option in the middle of the page).