This website is a joint venture of the Library of Congress & the NEH. "Chronicling America is a website providing access to information about historic newspapers and select digitized newspaper pages, and is produced by the National Digital Newspaper Program (NDNP)." The database currently has papers from 25 states and the District of Columbia published between 1836-1922.
"This online database contains over 1 million historical newspaper pages from Stars and Stripes, the independent daily newspaper of the U.S. military. At present the archive includes newspapers published from 1948 through 1999."