The Library Search contains a wide range of literature relating to child welfare, including child abuse prevention, child abuse and neglect, out-of-home care, adoption, and other topics. They have peer-reviewed journal articles, books, evaluation reports, grantee final reports, and program reports.
"A database of full-text electronic resources such as books, articles, theses and documents as well as digitized materials such as photographs, archival resources, maps, etc. focusing primarily on First Nations and Aboriginals of Canada with a secondary focus on North American materials and beyond." - Indigenous Studies Portal, University of Saskatchewan
Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites.