Grey Literature

Guides to Find Grey Literature

Grey Literature and How to Find it -- From the Health Sciences Library & Informatics Center, the University of New Mexico

LibGuides on Associations and Sources for Grey Literature -- Complied by Cleo Pappas, Librarian & Assistant Professor, Library of the Health Sciences, the University of Illinois at Chicago

Grey Literature Report -- A bimonthly publication of The New York Academy of Medicine Library alerting readers to new grey literature publications in health services research and selected public health topics.

Grey Matters: a Practical Search Tool for Evidence-Based Medicine -- Produced by the Information Services team at the Canadian Agency for Drugs and Technologies in Health (CADTH). Grey Matters is a comprehensive checklist for systematically searching grey literature sources.

Health Sciences Online - Provides free, online links to a comprehensive collection of top-quality courses and references in medicine, public health, pharmacy, dentistry, nursing, basic sciences, and other health sciences disciplines, including medical specialty societies, accredited continuing education organizations, governments, and top-ranked universities.

MedNar - A free, publicly available deep web search engine that returns high-quality results by submitting your search query to over 60 authoritative medical collections. - A global science gateway that searches national and international scientific databases and portals.

Other Resources

Grey Literature Network Service - The goal of GreyNet is to facilitate dialog, research, and communication between persons and organizations in the field of grey literature and seeks to identify and distribute information about grey literature in networked environments. Main activities include the International Conference Series on Grey Literature, creation and maintenance of web-based resources, a listserv, The Grey Journal, and curriculum development in the field of grey literature.

Medscape - Free registration is required to access information. Conference abstracts/coverage. Items from the latest nursing conference included interviews with researchers.

Virginia Henderson International Nursing - A great place to look for grey literature for nursing research. You can search either of the following; one at a time: *Conference/Project Abstracts *(abstracts submitted as a collection) *Study Abstracts *(investigator-posted studies) - formerly known as Research Registry.


Robert Wood Johnson Foundation -- Look under Publications and Research and you will find lots of interesting stuff.


Blackhall K. Finding studies for inclusion in systematic reviews of interventions for injury prevention the importance of grey and unpublished literature. Inj Prev. 2007 Oct;13(5):359. PubMed PMID: 17916897; PubMed Central PMCID: PMC2610605.

Blackhall identifies 6 ways to search for grey (unpublished) literature; Cochrane Central Register of Controlled Trials, hand searching, databases of unpublished and ongoing studies, the internet, reference lists and subject experts. Full text article is available in PubMed Central.

Searching Tips

  • Key foundations sponsoring nursing research include Robert Wood Johnson

  • Don't forget any related nursing/social services organizations

  • Google/Google Scholar should provide lots of leads; for example, limit search to .gov domains for government sponsored projects. Check newspaper collections available via library systems/consortia in your state, or your library (academic).