has access to some online newspaper and magazine databases:
Available on microfilm at KL: Detroit News
(1890-2015) and online index
Many newspapers are also available on the web. Check the following:
is a searchable database of digitized newspapers from 1835 to 1922. Its U.S. newspaper directory
allows you to identify newspapers for specific regions and times and how to access them.
Many historical American newspapers have been digitized by historical societies or archives, and made freely available. For example:
The Michigan Digital Newspaper Portal
lists local newspapers archives (either publicly available or those available for a fee).
A good list of online newspapers
is available on Wikipedia
Google News archive
contains many historical newspapers.
For more information on historical newspapers:
European Library portal