General information
http://www.lausd.k12.ca.us/Belmont_HS/tkm/index.html
This site provides a list of relevant vocabulary, allusions, and idioms from the text of To Kill a Mockingbird. The summaries are not very helpful, but the other links are. There are also links to pictures of the plants named in the book, recipes for the foods eaten, a map of Alabama, and even a picture of a mockingbird.
The Author and the Book
http://library.thinkquest.org/12111/SG/SG5.html#author
Historical background.
