U.S. Department of Housing and Urban Development:
http://www.hud.gov/
HUD Employee locater:
http://www5.hud.gov:63001/po/i/netlocator/
HUD regulations, notices and mortgagee letters:
http://www.hudclips.org/sub_nonhud/html/shortcut.htm
HUD Multifamily Accelerated Processing (MAP):
http://www.hud.gov/offices/hsg/mfh/map/maphome.cfm
California Housing Finance Agency:
http://www.calhfa.ca.gov/
California Tax Credit Allocation Committee:
http://www.treasurer.ca.gov/ctcac/
Fannie Mae: 
http://www.fanniemae.com/index.jhtml