A library’s catalog will give you a listing of all the books, journals, and other resources owned by the library.  It will tell you what is available both online and on the shelves.  Be sure to note the location, call number and whether or not the item is checked out.  

Find books on the library shelves by browsing the following Library of Congress call numbers:

Classical Religion (BL700-820)

History of the Greco-Roman World (DE1-100)

History of Ancient Greece (DF10-289)

History of Ancient Italy (DG11-365)

Greek and Latin Language & Literature (Subclass PA)

WorldCat
Search the catalogs of libraries all over the world.

Google Books
Find many books online, full text and/or select chapters. Especially good for texts published before 1914.

Find a book related to your topic. Click on the title, then browse the Subjects links included in the record to “find more like this one”.   Once you click on a Subjects link, you will be taken to a list of all the items in the catalog that share that subject heading.