The following sources provide overviews of ideas and topics in literature, history and science that relate to the plays you are reading by Bertold Brecht and Arthur Miller. When using an article in an encyclopedia or handbook, always check the bibiliography for further reading. It will provide a selective list of the books, journal articles, essays, and, frequently, Web resources considered to be the most up-to-date and reliable. This is a good start for your research and can help provide a broader perspective which will add to your understanding.