HUD (US Department of Housing and Urban Development)
http://www.hud.gov/

HUD (US Department of Housing and Urban Development) en español
http://espanol.hud.gov/index.html

US Department of Agriculture Rural Development
http://www.rurdev.usda.gov/

NALHFA – National Association of Local Housing Finance Agencies
http://www.nalhfa.org/

NAHRO – National Association of Housing and Redevelopment Officials
http://www.nahro.org/

Nan McKay and Associates
http://www.nanmckay.com/