Newspapers.com includes more than 800 million pages from 20,000+ newspapers. The collection includes some major newspapers for limited periods (e.g., 50 years of the New York Times), but mostly consists of US regional papers from the 1700s to the late 1980s. Free accounts through the Wikipedia Library include access to Newspapers.com Publisher Extra content.
When citing Newspapers.com content, use clippings where possible. Clippings allow readers to view the source text through an open access URL without having to subscribe.