[PW] Question on periodical archives from pre-digital era

[Erica Cathers]

This is for me, so no rush.

Does anyone know of a comprehensive list of newspapers and magazines which 
provide very old full-text articles in digital format, preferably free?

So far, I know of Time magazine (archives online back to 1923, free), New 
York Times (as far back as 1851, some free), The New Yorker (can purchase a 
disk that goes back to 1925), and Atlantic Monthly (back to 1857 online, for 
a fee).

We only have our local newspaper on microfilm, and mainly depend on 
EbscoHost for other periodical back issues--but that doesn't go back far 
enough for what our students need for history projects sometimes.

TIA,
Erica Cathers
Gloucester City (NJ) Public Library