United States Code - contains virtual main editions of the U.S. Code. The information contained in the U.S. Code on FDsys has been provided to GPO by the Office of the Law Revision Counsel of the U.S. House of Representatives.
Code of Federal Regulations - The Code of Federal Regulations (CFR) annual edition is the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. It is divided into 50 titles that represent broad areas subject to Federal regulation.
Federal Register - the official daily publication for rules, proposed rules and notices of federal agencies along with executive orders and presidential documents.
Online Tutorial - describes how to use the Federal Register Online -- helpful to paralegals, associates, research assistants.
Regulations.gov - your online source for U.S. government regulations from nearly 300 Federal agencies.
Congress.gov - United States Legislative Information, formerly known as THOMAS. THOMAS.gov will be available until the end of 2014, for more information about the change see About Congress.gov.
Tennessee state materials free online include the Tennessee Code unannotated. The Tennessee State Assembly Legislation web page may be helpful for legislative history information. Greg March, librarian at UTK Hodges Library has curated a libguide titled State Law, Legislation and Regulations, the primary focus of the guide is Tennessee yet material is also included about other states.
To locate other states materials, Google state name and statutes (i.e. "Kentucky statutes") or state name and legislative history in quotes. Indiana University has an awesome State Legislative History Guide that links to each state's official legislation page.
The State of Tennessee Municipal Technical Advisory Service ("MTAS") includes links to nearly all online municipal codes and charters throughout the state. To view click Codes and Charters.
The free and friendly Municode hosts many municipal codes all across the country, including Knoxville's.