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Gray Literature

A guide to research sources that are neither scholarly nor popular in nature, consisting in reports, working papers or white papers produced by Nonprofit, or Nongovernmental organizations, Think Tanks, or Government Agencies


Gray Literature, (noun): Written material (such as a report) that is not published commercially or is not generally accessible.

-Merriam Webster Dictionary, (

Selected Sources of Gray Literature

Websites for Departments of the Federal Government