To find resources on Latin language and literature in the catalog, select the "Subject" search on the Advanced Search page. Some of the terms you would use include "Latin," "Latin language," or "Latin literature."
Depending on your topic, you can narrow down your searching even further by adding subdivisions. For example, under the "Latin language" subject search, you could focus the search in these different ways:
Latin language - Terms and phrases
You could also change the results by the format of the book, adding terms like "Encyclopedias," "Handbooks, manuals, etc.," and "Dictionaries" to the end, bringing back just those types of items.
Broadening your search could be beneficial as well. Here are some general topics that could provide worthwhile books: