American Institute of Certified Public Accountants http://www.aicpa.org/index.htm
Audit Net http://www.auditnet.org
CPA Net http://www.cpanet.com
Financial Accounting Standards Board (FASB) http://www.fasb.org/public
GAO: Accountability, Integrity, Reliability http://www.gao.gov - resources include GAO reports and testimony back to 1995
Guide to Taxation Law http://www.hg.org/tax.html
IAS PLUS http://www.iasplus.com/index.htm
International Federation of Accountants http://www.ifac.org
International Financial Reporting Standards http://www.iaasb.org
IRS http://www.irs.gov/
Tax and Accounting Sites Directory http://www.taxsites.com
TRAC IRS Site http://trac.syr.edu/tracirs