Federal Acquisition Regulation (FAR) -- GSA's FAR Secretariat
Federal Acquisition Regulation (FAR) -- Hill Air Force Base
Cost Accounting Standards (CAS) -- Hill Air Force Base
Defense Federal Acquisition Regulation Supplement -- Hill Air Force Base
Defense Federal Acquisition Regulation Supplement
Air Force Federal Acquisition Regulation Supplement
NASA FAR Supplement
Department of Veterans Affairs Acquisition Regulation
Army Corps of Engineers
Department of Education Acquisition Regulation
Department of Energy Acquisition Regulation
Department of Interior Acquisition Regulation
Department of Labor Acquisition Regulation
Department of State Acquisition Regulation

Model Procurement Code Committee Page
Draft of the Model Procurement Code -- MPC is the foundation for most state laws. Available here in .pdf format

Unted States Code
House of Representatives - Internet Law Library Searchable Form
Search US Code
Cornell University
Government Printing Office

Federal Government Documents and Records
Government Printing Office (GPO) Access
National Archives and Records Administration (GPO Access)
Code of Federal Regulations (GPO Access )
Federal Register (GPO Access)
Online Databases (GPO Access)
Executive Orders
Government Accounting Office Bid Protest Decisions

Legislative Information
THOMAS - Legislative Information on the Internet
Congressional Record (GPO Access)

Other Legal Resources
SBA's Legal, Regulatory, and Freedom of Information Act Resources
General Service Administration's FedLaw site
GSA's FedLaw - Acquisition, Contracting, and Procurement Laws
Findlaw