The Department of Public Instruction currently contracts with four vendors (EBSCO, Gale/Cengage Learning, Heritage Microfilm, Inc., and Teachingbooks.net, LLP) to provide access to a large volume of full-text information. Users can search approximately 20,000 full-text magazines, journals, newspapers, reference materials and other specialized information sources. Included are over 8,000 full text magazines and journals, over 1,500 newspapers and newswires, and approximately 6,800 full text books. Full text articles are taken from 2,900 historical newspaper titles. In addition the BadgerLink vendors provide access to automobile repair manuals, company profiles, country economic reports, industrial reports and yearbooks, biographies, primary historical documents, charts, images, schematics, maps, poems, essays, speeches, plays, short stories, author audio programs and book readings, author video programs, book reviews or discussion guides, and many other full text resources not available through regular internet search engines. When these resources are available through search engines such as Google, it is because Wisconsin has licensed the content to appear when searched through these search engines. BadgerLink also connects users to WISCAT (the online catalog of Wisconsin library holdings), OCLC WorldCat (an international database of library holdings), directories of libraries, digitized library collections, and other information.