National Criminal Justice Reference Service (NCJRS)NCJRS hosts one of the largest criminal and juvenile justice libraries and databases in the world, the NCJRS Abstracts Database. The collection, with holdings from the early 1970s to the present, contains more than 225,000 publications, reports, articles, and audiovisual products from the United States and around the world. These resources include statistics, research findings, program descriptions, congressional hearing transcripts, and training materials.