Start with these Databases to Locate Reference Books
To find reference books on a topic, you can either search the Library Catlaog using the above search widget or you can search one of the following databases:
History E-books (Including Decades in America (1950s, 1960s, 1970s, 1980s, 1990s), Great Events from History, and Great Lives in History (Ancient World and 18th Century).