OMB Circular A-87:Cost Principles for State, Local and Indian Tribal Governments
http://www.whitehouse.gov/OMB/circulars/a087/a087-all.html

OMB Circular A-102, Grants and Cooperative Agreements With State and Local Governments
http://www.whitehouse.gov/OMB/circulars/a102/a102.html

OMB Circular A-122: Cost Principles for Non-Profit Organizations
http://www.whitehouse.gov/OMB/circulars/a122/a122.html

OMB Circular A-133: Audits of States, Local Governments, and Non-Profit Organizations
http://www.whitehouse.gov/OMB/circulars/a133/a133.html

OMB Circular A-133 Compliance Supplement (March 2000)
http://www.whitehouse.gov/OMB/circulars/a133_compliance/00toc.html

OMB Circular A-133 : Federal Register Materials Accompanying OMB Circular A-133
http://www.whitehouse.gov/OMB/circulars/a133/a133-lead.html