American Popular Entertainment Collection: Entertainment industry-related newspapers from 1853-1929 from the University of Illinois.
Boston Public Library Newspaper Databases: Historical and international online newspaper databases that can be accessed by registering for a BPL eCard account.
Boston Public Library eCard: Register online here. Available to residents of Massachusetts or any student or employee of an educational institution. Provides immediate access to BPL electronic resources.
Bowling Green State University: This libguide from BGSU contains links to a variety of historical newspapers.
Chronicling America: Search newspaper pages from 1836-1922 or use the U.S. Newspaper Directory to find information about newspapers published between 1690-present. From the Library of Congress.
Historical Newspapers by State - U.S.: Resource Guide from the University of Pennsylvania Libraries.
NewspaperCat: Catalog of Digital Historical Newspapers (NewspaperCat) is a search engine for online digitized historical newspaper content from newspapers published in the United States and the Caribbean. From the University of Florida.
Wikipedia list of newspaper archives An ever-changing list of newspaper archives from around the world.
Freely accessible resources
Life Magazine: 1936-1972 from Google Books
The Atlantic :1857--present, from the publisher's webpage.
Subscription Resources (Must be logged into the WSU network to view)
Time Magazine, 1923-Present from Ebsco
Newsweek, 1975-2012 from Lexus-Nexus (Enter search terms into box. On results screen, use dropdown to sort by date or relevance)
Saturday Evening Post, 1839-Present from Ebsco