OMB Circulars (available in a number of formats)

Per Diem Travel Rates

• Continental US (CONUS)/Outside Continental US (OCONUS)
• Foreign Per Diem Travel Rates

Other Federal Laws and Regulations

• Federal Acquisition Regulations
• US Code (USC) (GPO Access)
• US Code (USC) (US House of Representatives)
• US Code (USC) (Legal Information Institute, Cornell University)
• Code of Federal Regulations (GPO Access)
• Catalog of Federal Domestic Assistance