This collection can be helpful if you have Swiss ancestors. The collection reportedly contains 116 titles, comprising over 490,000 issues, about 4.5 million pages and over 36 million articles...all in the native language.
You can translate the site to English (look for the button in the upper right corner of the landing page), but that translates the headings, not the articles themselves.
The reader has a nice feature. When you click on an article in the image of the paper you are interested in, a transcribed version of the article appears in the left page of the window.