There are three types of sources:
1) Primary Sources
2) Secondary Sources
3) Tertiary Sources
Google has scanned & made available thousands of local, regional and foreign newspapers. Search a time period or region, or browse newspapers by title.
Reference & Other Print Sources. Search PITTCat+ to find primary source materials at ULS libraries. Make use of the many excellent print resources that are available to find primary source materials. These include:
Internet Search Engines