NexisUni (1980s- ) is the usual first choice for finding recent newspaper articles, with full text (pictures omitted) coverage of numerous U.S. and overseas newspapers.  Note that the default search on the initial screen is OR between words.  Tips for Advanced Search.

Factiva (1980s- ) offers full text (pictures omitted) of over 6,000 newspapers, magazines, wire services and trade journals. Use Internet Explorer. For details on the publications included, open Support? (upper right), select Content Watch, select Source Search. To limit to a particular newspaper enter, e.g., sn=wall street journal and "search term". Articles for which the copyright resides with the author rather than the newspaper which are not available in LexisNexis sometimes have a citation without full text in Factiva. Includes the Wall Street Journal full text, 1984- (abstracts, 6/13/1979-1983). Search Guide: Factiva User Guide: Browsing & Searching (Boston College guide)

Articles for which the copyright resides with the author rather than the newspaper will not generally be available in NexisUni or Factiva, although Factiva sometimes provides citations. Use newspaper indexes to find articles omitted from the full text sources.

Ethnic NewsWatch (1959- ) offers full-text of 90 newspapers and other periodicals (1990- ) and of 30 African American, Hispanic American, and Native American newspapers and other periodicals (1959-1989). Includes book/film/television reviews. Lists of periodicals by ethnicity. Includes African American, Arab American, Asian American, European American, Hispanic/Latino/Chicano, Jewish, Native American newspapers. For more newspapers by ethnicity, see: Additional U.S. Ethnic Newspaper Sources

NewspaperARCHIVE offers numerous newspapers from the 19th and 20th centuries.  Contains many small-city newspapers.

ProQuest Historical Newspapers (mostly 19th-20th century) include illustrations, editorials, and advertising. Available papers are listed below.

General Newspapers

Search all ProQuest news sources using: Proquest News & Newspapers.  Search across all newspapers, or select a custom group of titles to search across, rather than searching just one title.

America’s Historical Newspapers (1690-1993)  (Readex) offers full text of over a thousand U.S. newspapers. Includes all papers listed in the standard History and bibliography of American newspapers, 1690-1820, by Clarence S. Brigham. Although a very rich resource, many important newspapers, especially for the later years, are not included.  Now includes several post-1922 paperstitle list (In Quick Facts & Overview box on the right).

19th Century U.S. Newspapers offers full text of about 500 newspapers.

Chronicling America, enhancing access to historic American newspapers (1836-1922) (Library of Congress) offers searchable full text.  For a list of digitized newspapers for each state, choose All Digitized Newspapers 1836-1922. Also includes the valuable U.S. Newspaper Directory, 1690-Present, in which searches for newspapers can be limited by language and ethnicity.