Some of the archives I'm listing are free, some are not, as usual you get what you pay for pretty much. The Missouri search site listed is a very good one and it is free. I went through and deleted a bunch out of my files that didn't work very well.
Please add any more sources if anyone has them.
http://library.humboldt.edu/~chadwick/newspap.htm
http://www.library.yale.edu/humanities/media/news.html
http://www.meredith.edu/library/databases.htm
http://www.journalismnet.com/archives/uslist.htm
http://library.ucf.edu/GovDocs/flanews.asp
http://www.loc.gov/rr/news/oltitles.html
http://www.paperofrecord.com/Default.asp
http://thestar.pagesofthepast.ca/
http://www.accessible.com/about.htm
Please add any more sources if anyone has them.
http://library.humboldt.edu/~chadwick/newspap.htm
http://www.library.yale.edu/humanities/media/news.html
http://www.meredith.edu/library/databases.htm
http://www.journalismnet.com/archives/uslist.htm
http://library.ucf.edu/GovDocs/flanews.asp
http://www.loc.gov/rr/news/oltitles.html
http://www.paperofrecord.com/Default.asp
http://thestar.pagesofthepast.ca/
http://www.accessible.com/about.htm