Published in a series of volumes called the United States Code (U.S.C.)
Revised every 6 years with supplements issued as needed
Can be found at http://www.gpo.gov/fdsys/ or you can access it through LexisNexis from the Michener Library database. LexisNexis is called an annotated code version. It contains information about each statute like citations to the legislative history, cross-references to related statutes and regulations, research guides and summaries of court cases that have interpreted each statute.
There are 50 numbered titles, divided into chapters and sections. For example,
Title 34 contains education statutes, so the IDEA will be found there;
Title 29 contains labor statutes, so Section 504 will be found there; and
Title 42 contains public health and welfare statues, so the ADA will be found there.