US Newspaper Program
www.neh.gov/projects/usnp.html: Preservation and cataloging projects in all 50 states.
Library of Congress: Newspaper Indexes, Archives, Morgues
lcweb.loc.gov/rr/news/oltitles.html: Links to dozens of period newspapers.
American Newspaper Repository
www.gwi.net/~dnb/newsrep.html: Nonprofit group dedicated to saving newspapers in their original form.
www.newspaperabstracts.com: Searchable archive of newspapers published before 1923.
Immigration History Research Center
www.umn.edu/ihrc: Extensive collection of ethnic newspapers.
The Olden Times
theoldentimes.com: Scanned collection of 18th-, 19th- and early 20th-century US newspapers.
National Library of Canada
www.nlc-bnc.ca/8/16/index-e.html: More than 200,000 reels of newspapers on microfilm, which can be requested through interlibrary loan.
Historical Newspaper Collection
www.ancestry.com/search/rectype/periodicals/news: Fast-growing subscription site of old newspapers, $79.95 a year.
New York Times (1851 to 1999)
Major libraries across the country pay a hefty fee for access to this invaluable digital collection from ProQuest Historical Newspapers. Ask your local librarian for details.