A more extensive list of online newspaper resources are available from the Library's Electronic Resources Finder. Some of these are only aggregated collections of links to U.S. and international newspapers, not all of them contain searchable, full-text articles.
Times Digital Archive
Online access, fully searchable full text of over 200 years (1785 to 1985, with 1986 to 2003 added later this year) of The London Times, the "world's newspaper of record." [Note: "Sunday Times" is a distinct newspaper with no editorial connection to The Times London, and is not included in this database.]
Sunday Times Digital Archive, 1822-2006
180 years and 600,000 pages of the The Sunday Times. (Despite the similarity of names, The Sunday Times is an entirely separate paper from The Times until 1st January 1967, when both papers came under the common ownership of Times Newspapers Ltd. To this day, The Sunday Times remains editorially independent from The Times, with its own remit and perspective on the news.)
Historical Newspapers (ProQuest)
Indexes articles from Chicago Defender (1905-1975), Chicago Tribune (1849-1986), Los Angeles Times (1881-1986), New York Times (1851-2004), San Francisco Chronicle (1865-1922), Wall Street Journal (1889-1990), and Washington Post (1877-1991).
Includes over 6,000 individual titles of international, national and local newspapers and wire services; radio and television transcripts; and business, medical, industry, and legislative magazines, journals, and newsletters. Wide geographic coverage and translations from foreign-language sources, as well as news services like the Associated Press, Agence France Press, El Pais and Xinhua (New China) News Agency.
Irish Times (1859-2011) and Weekly Irish Times (1876-1958)
Full-text of key Irish newspaper from 1859-2011.
Izvestiia Digital Archive
Completely digitized archive of Izvestiia, one of the longest-running Russian newspapers founded in March 1917; during the Soviet period Izvestiia was the official organ of the Presidium of the Supreme Soviet of the USSR.
Pravda Digital Archive
Full text and full image coverage of Pravda beginning in 1912 to the present. Searchable in Russian Cyrillic or transliteration.
Latin American Newspapers Series 2 (from the World Newspaper Archive)
This archive of Latin American newspapers contains thousands of pages of content. Included in the collection are: Critica from Argentina; Diario de la Marina from Cuba; Universal from Caracas, Venezuela; and more. For more Latin American newspapers, see Latin American Newspapers Series 2. Both series are part of the World News Archive project from Readex/Newsbank.
Latin American Newspapers Series 1 (from the World Newspaper Archive)
This growing archive of Latin American newspapers contains more than 150,000 pages of content. New content is being added regularly and will eventually contain more than 1.5 million pages. Included in the collection are: Comercio from Peru; El Dictamen, Mexican Herald and Excelsior from Mexico; Prensa and Razon from Argentina; and more. For more Latin American newspapers, search the newly released Latin American Newspapers Series 2. Both series are part of the World News Archive project from Readex/Newsbank.
Please Note: A librarian at Bowling Green University has compiled a guide that, according to her, lists all publicly accessible digitized historical newspapers. This is new, so I haven't had a chance to explore it, but it looks like it might be very useful for some of you.
In News/Micro you will find microfilm of many California newspapers. Few of them are indexed so you should prepare before your visit a list of dates of issues that you want to look at.
The San Francisco Chronicle is available full text online only up to 1922. Indexes for other years are available in News/Micro:
1913-1949 San Francisco Newspapers Index (Also see Microfiche 10904 Guide) MICROFICHE 10904 NEWS/MICRO
1950-1980 San Francisco Newspapers Index MICROFICHE 10503 NEWS/MICRO
July 1970-Sept 1975 California News Index AJ3.C16 NEWS/MICRO
1976- present San Francisco Chronicle Index AJ21. S25. N4 NEWS/MICRO
To find other newspapers, search for them by title in OskiCat. See: Searching newspaper titles in OskiCat: The Movie! (40 seconds)
California Digital Newspaper Collection
Offers over 200,000 pages of California newspapers spanning the years 1849-1911: the Alta California, 1849-1891; the San Francisco Call, 1893-1910; the Amador Ledger, 1900-1911; the Imperial Valley Press, 1901-1911; the Sacramento Record-Union, 1859-1890; and the Los Angeles Herald, 1905-1907. Additional years are forthcoming, as are other early California newspapers: the Californian; the California Star; the California Star and Californian; the Sacramento Transcript; the Placer Times; and the Pacific Rural Press.
Historical Newspapers (ProQuest)
Includes Chicago Defender (1910-1975). Chicago Tribune (1849-1988). Los Angeles Times (1881-1988). San Francisco Chronicle (1865-1922). New York Times (1851-1994) with Index (1851-1993). Wall Street Journal (1889-1994). Washington Post (1877-1995).
Limit your search to California newspapers by choosing the News option on the left of the screen, then choose All News. FUnder "Select Source" choose US Newspapers & Wires. Under "Article Location" choose US State and limit to California. When your results are displayed, there is an option on the left to see results only from Newspapers and from specific California news publications.
Ethnic News Watch
Fewer publications are indexed in this resource than in the others listed here, but coverage goes back further, in some cases to the mid-1960s. The advance search allows you to limit by location of interest.