This report is an analysis of alternative datasets and research approaches to assess the effects of Hurricane Katrina on populations served by the U.S. Department of Health and Human Services/Administration for Children and Families (ACF). The assessment addresses four overarching research questions, with an emphasis on using existing datasets: 1) where did populations of interest go and where are they living since Katrina; what are the effects on income and employment; what are the needs for ACF programs and services; and how did the disaster affect ACF programs themselves? The report includes an extensive annotated bibliography of analyses through January 2007.