Google News ArchiveSome Latin American Historical Newspapers available through google's digitization project -- primarily Mexican news sources available here.
TITLE
# OF ISSUES DATES
Diario del Hogar (MEXICO) 8,477 issues Sep 16, 1881 - Nov 15, 1914
El Abogado Cristiano (MEXICO) 1,047 issues Aug 1, 1880 - Dec 26, 1929
El Alacran (MEXICO) 34 issues Sep 3, 1899 - May 19, 1900
El Asilo de Mendigos
(MEXICO) 38 issues Jul 1, 1879 - Oct 31, 1889
El Bautista (MEXICO) 127 issues May 19, 1910 - Dec 26, 1912
El Correo del Comercio (MEXICO) 1,374 issues Sep 15, 1871 - Oct 12, 1876
El Correo Espanol (MEXICO) 7,147 issues Nov 9, 1889 - Dec 31, 1914
El Cronista Musical 34 issues May 1, 1887 - Dec 25, 1887
El Cruzado (MEXICO) 60 issues Jul 22, 1893 - Sep 16, 1894
El Diario de Nueva York
(USA, New York) 248 issues Jan 2, 1962 - Apr 29, 1963
El Diario la Prensa (USA, New York) 689 issues May 2, 1963 - Jun 21, 1968
El Monitor Republicano (MEXICO) 469 issues Jul 1, 1884 - Dec 31, 1885
El Nacional (MEXICO) 3,784 issues Apr 1, 1890 - Dec 31, 1918
El Pais (MEXICO) 4,423 issues Sep 26, 1900 - Aug 22, 1914
El Pajaro Verde (MEXICO) 1,960 issues May 13, 1865 - Dec 31, 1886
El Partido Liberal (MEXICO) 2,777 issues Nov 13, 1886 - Oct 15, 1896
El Siglo Diez Y Nueve (MEXICO) 967 issues Jun 25,1893 - Oct 15, 1896
El Tiempo (COLOMBIA) 21,397 issues Feb 2, 1911 - Mar 31, 2007
El Universal (MEXICO) 5,194 issues Nov 16, 1848 - Dec 7, 1901
Jornal do Brasil (BRAZIL) 18,167 issues Apr 8, 1891 - Dec 31, 1999
La Nacion (COSTA RICA) 9,480 issues Nov 13, 1945 - Dec 31, 1991
La Opinion (USA, Los Angeles) 23,971 issues Mar 8, 1891 - Sep 30, 2008
La Sociedad (MEXICO) 1,915 issues Dec 26, 1857 - Mar 31, 1867