A helpful way to find the following:
Reference books, such as encyclopedias, dictionaries, and handbooks, can be a great place to begin research on your topic.
They will often give you a good overview of a topic, background information, specific details, or statistics. In addition, they can point you to other useful sources of information for your research.
Collections of online reference books allow you to search the full-text of multiple titles that might cover your research topic.