The Librarians recommend that you definitely try Academic Search Premier as it is broad in scope and includes a wide variety of material to use in your research.
The Library subscribes to a number of databases that bring together a wide variety of subjects and content. Academic Search Premier is part of the broader collection from EBSCOhost.
While you'll find newspaper articles in some of the databases listed above, the databases included here are focused on newspapers and so will give you a better result when that's what you want.
You can also create a free account for the websites of the New York Times and Wall Street Journal to read current news and search their archives.
Need image sources for your paper? Try the Library's image databases.