This appendix discusses in detail our methodology for addressing the following research questions: (1) What is known about the characteristics of homeless women veterans, including those with disabilities? and (2) What barriers, if any, do homeless women veterans face in accessing and using VA's Homeless Providers Grant and Per Diem and HUD-VA Supportive Housing programs? To address these research questions, we analyzed VA data on women veterans (including those with disabilities) identified by VA as being homeless for fiscal years 2006 through 2010, and surveyed all GPD program providers that VA indicated had a capacity to serve women veterans and all homeless coordinators at VA Medical Centers. We also conducted site visits to California, the District of Columbia, Pennsylvania, and Texas, which included discussions with service providers, organizations collecting homelessness data, and homeless women veterans. In addition, we interviewed agency officials, and representatives of veterans service organizations, and reviewed relevant federal laws, regulations, and program documents.