A new search tool uses machine learning to search millions of U.S. newspaper pages for historical pictures. The U.S. Library of Congress recently launched the tool, called Newspaper Navigator. The online search system is available for free to the public. The Library of Congress is the world’s largest library. It offers materials from the creative record of the United States. The library serves as the main research service for the U.S. Congress. Newspaper Navigator currently permits users to search more than 16 million pages from newspapers across the country, from 1900 to 1963. The newspaper pages were digitized for another Library of Congress project, called Chronicling America. This tool also permits searches across the library’s 16 million newspaper pages. The pages contain more than 1.5 million images.