Chronicling America allows you to search and view select newspaper pages from 1880-1922 and find information about American newspapers published between 1690-present.
Electronic Library for Minnesota
ELM (Electronic Library for Minnesota) gives Minnesota residents online access to magazine, journal, newspaper, and encyclopedia articles, eBooks (online books), and other information resources.
Minnesota Newspaper Directory
The Minnesota Newspaper Directory is published by the Minnesota Newspaper Association as a quick reference guide to statewide newspapers.