The U.S. Congress has authorized federal agencies to issue administrative rules and regulations. The Federal Register Act of 1935 established the framework for access to these documents. The publications and finding aids for regulatory materials are located in various online resources.
Federal Register Online https://www.federalregister.gov/
Federal Register 1994 - 2014 http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR
Federal Register http://www.archives.gov/federal-register/
Code of Federal Regulations http://www.ecfr.gov/cgi-bin/ECFR?page=browse
Code of Federal Regulations (annual edition) http://www.gpo.gov/fdsys/browse/collectionCfr.action?collectionCode=CFR
The Code of Federal Regulations (CFR) contains general and permanent rules published in the Federal Register. It is divided into 50 titles that represent broad areas subject to Federal regulation.
Each title is divided into chapters and each chapter is further subdivided into parts that cover specific regulatory areas. Large parts may be subdivided into subparts. All parts are organized in sections.