Newspaper research can be a useful tool in historical research. Most newspapers are arranged by the city of publication, name of the paper, and by date(oldest to the most recent). There is no master subject access to all newspapers. Wouldn't that be lovely if that existed? In order to search for an event you need to know the place where it happened and the date(day, month and year!). More and more newspapers are being digitized and are available online or available via paid subscription services that your local library have may have. Check and see what is available on the web.
Contact Steve now with your Minnesota research needs.