"Grey literature (or gray literature) is materials and research produced by organizations outside of the traditional commercial or academic publishing and distribution channels. Common grey literature publication types include reports (annual, research, technical, project, etc.), working papers, government documents, white papers and evaluations. Organizations that produce grey literature include government departments and agencies, civil society or non-governmental organizations, academic centres and departments, and private companies and consultants".
Wikipedia - Grey Literature
Though the Library acquires books related to long-term care, many of the publications on this topic fall into the category of grey literature, particularly government documents and reports published by associations and NGO's generally. The following guides highlight approaches to searching for grey literature:
• Finding Grey Literature
• Grey literature: What it is & how to find it
• Grey Matters: a practical tool for searching health-related grey literature
• Quick Summary: What is Grey Literature?
• What Is Grey Literature?