I've looked at the link provided by Amanda.  As promised, I will not share the link, but I will comment on the contents.

Every result of any query I run has been published in the past.  Each result is shown in XML format, and has a newspaper title, date of publication, city, state, and country of publication, etc, listed as variables in XML format.  It appears as though there is a vulnerability on the hosting site that allows any person to run queries on their database by simply directing themselves to the appropriate URL.

This is simply a collection of older (and some newer) published articles, digitized using OCR technology.

Rereading your original post, I see that you only say the articles have not been published on the internet, not necessarily a claim of never being published in any medium.  I did find that some of them have not been published on the internet before.  I would caution anyone that reposting these on the internet would constitute a copyright violation, not only of the hosting site (who probably shares all of these to anyone with a membership), but also of the original publishers of the articles.