Department of Real Estate
http://www.dre.ca.gov/

United States Post Office
http://www.usps.com/

California Escrow Association
http://www.ceaescrow.org/

Franchise Tax Board
http://www.ftb.ca.gov/individuals/wsc/California_Real_Estate.html
Withholding Requirements for Sale of California Real Estate

United States Department of Treasury
http://www.ustreas.gov/offices/enforcement/ofac/sdn/t11sdn.pdf

California Association of County Treasurers & Tax Collectors
http://www.cacttc.org/ttclist.shtml

California Real Estate & Financial Services License Status Check
http://search.dre.ca.gov/integrationaspcode/

Riverside County Tax Assessor
http://www.treasurer-tax.co.riverside.ca.us/

San Bernardino County Tax Assessor
http://www.sbcounty.gov/

Los Angeles County Tax Assessor
http://www.assessor.lacounty.gov

Orange County Tax Assessor
http://www.oc.ca.gov/assessor/