Search America's historic newspapers pages from 1836-1922 or use the U.S. Newspaper Directory to find information about American newspapers published between 1690-present. Try Recommended Topics to see recommended search strategies.
This special tool from Google allows you to search a variety of news sources from past years. Easiest if you can limit to the appropriate date. Not everything is freely available but you can limit to free sources using the "Price" feature.
"This page highlights and links to past, present, and prospective digitization projects of historic newspapers. The focus is primarily on digital conversion efforts, not full-text collections of current news sources."
Vintage newspaper archives from around the world are highlighted here (other than US and Europe archives, which are on other pages). Headlines, articles, display ads, broadsides, classifieds, sports scores, historical stock prices. Most are freely available.