National Alliance to End HomelessnessSee: Interactive Tools and Solutions which provides a wealth of links to interactive maps, calculators, and charts to improve understanding of concepts related to ending homelessness, and Homelessness Counts: Changes in Homelessness from 2005 to 2007 a report which goes beyond HUD’s Third Annual Homeless Assessment Report by reporting on chronic, family, and other subpopulations at the state and community level.