Besides using the Search & Find search on the library home page and then unchecking the box on the left sidebar that excludes newspaper articles, here are databases focusing specifically on newspapers.
Factiva provides access to more than 32,000 sources (such as newspapers, journals, magazines, television and radio transcripts, photos, etc.) from nearly every country worldwide in 28 languages, including more than 600 continuously updated newswires. It also contains business and financial data on companies from around the world. License terms restrict access to MU students, faculty, and staff only.
Newsbank includes Early American Newspapers, Series 1 (1690-1876); U. S. Congressional Serial Set and Serial Set Maps (1817-1980); Early American Imprints, Series I: Evans, (1639-1800); Early American Imprints, Series II: Shaw-Shoemaker, (1801-1819); American State Papers, (1789-1838); World Newspaper Archive, which includes America's Historical Newspapers and African Newspapers.
Lists Missouri newspapers, along with circulation, county, city and links to newspaper's website. Most states have a press association, so if your town is not in Missouri, Google your state's press association and look for a similar directory.