The Center for Research Libraries (CRL) has extensive runs of newspapers from around the world many of which cannot be located elsewhere in the US. They are great about allowing people to borrow long runs of a paper on microfilm for extended periods of time. Place requests through Interlibrary Loan.
Library of Congress digitization project. Search America's historic newspaper pages from 1789-1924 or use the U.S. Newspaper Directory to find information about American newspapers published between 1690-present.
Newspapers, magazines and journals of the ethnic, minority and native press, 1959-1989. Full Text.
Rare collection of over 30 full-text titles, focusing on African American, Hispanic American, and Native American presses from 1959-1989. Unique perspectives are presented on the most important issues concerning ethnicities and minorities in the U.S. and Canada during the pivotal years of the 1960's, 1970's, and 1980's.