Encyclopedia of Social Work from the National Association of Social Workers and Oxford University Press -- a great starting place, policy on many social work topics.
Comprehensive Handbook of Social Work and Social Welfare Contains many sections on Social Policy and Policy Practice.
The Green Book (2016) is a key resource for federal programs. It provides updated statistics and information on programs such as Medicare, Social Security, Unemployment Compensation, Foster Care and welfare. Additionally, it includes a discussion of related issues, such as the well-being of the elderly and of children and families.
Congressional Publications contains congressional documents (hearings, committee prints, documents, and legislative histories) which are searchable through this fulltext database. CRS Research Reports are particularly helpful for overviews of federal policies on an array of topics.
LexisNexis AcademicSearch Fulltext searchable database of law reviews, cases and statutes.
MetaLib and USA.gov are two ways to search a variety of US Government sources with lots of information on social policies at the federal level, the Think Tank Search from Harvard is another useful search engine.
UCB: Use OskiCat to find books related to your topic at UC Berkeley. Oskicat will show you where it's located, and will also show you the Library of Congress Subject Heading -- which can help you find material other relevant books.
UC: Not enough books at Berkeley? Use Melvyl to find more books at other campuses in the UC system. Clickon the REQUEST button (in the detailed view of a catalog record) to request the item through Interlibrary Loan.
Google Books: Library catalogs don't search inside of books. Google Books can help you identify the book you need, then click on "Find in a Library" to see if we have it.