Each year updates to many of the topics are issued, along with new articles on timely topics. It indexes many different fields and can be a great way to get started finding secondary sources on your topic. They are updated more frequently and include annotations. Copies of all are in the Reading Room, and USC and USCA are also on the Fifth Floor in the Federal Materials section. Current state statutes are available on Lexis and Westlaw .
Previous editions are in the stacks.
Another place to search is LegalTrac . You might find a journal article on your topic which discusses various state laws. It is a looseleaf with cases and commentary covering most of the topics for this class. See the Getting Started section for more details about this tool. Cases for federal and state law may also be located by using the appropriate digest.