1994-present.  Local and national news, and a primary source of obituaries.

1876-1881  The Chester Daily Times  
1886  Chester Evening Times
1941 Chester Reporter 
1882-1959 Chester Times 
1959-1994 Delaware County Daily Times
See Newsbank's resource for issues 1994-present.

This is where you'll find Consumer Reports, Consumer Reports Buying Guide, Time, People, Scientific American, Discover, The New Republic, Vital Speeches of the Day, Congressional Digest, Civil War Times, History Today, Sports Illustrated, and many more.

One search, three databases using beautiful new search screens:
Philadelphia Inquirer Historic  1829-1922
Philadelphia Inquirer text edition 1981-Current
Philadelphia Inquirer Image edition 2018-Current