1. Scholarly Literature Reviews on homelessness organized into categories (General, United States, California)
2. Google Scholar general search results in the same categories.
Remember that the literature review is an excellent place to start your reading in the body of literature on a specific topic or sub-topic. When reading pay attention to themes, authors cited, and always examine the bibliography for additional relevant sources.
Try also the following recommended search terms and phrases in Google Scholar:
homelessness in America causes and effects, homelessness in America overview, homelessness in America deinstitutionalization, homelessness in Mmerica hunger, homelessness in America New York Times, homelessness in America criminalization family homelessness