I posted this on the NCGenWeb blog, but I wanted to do a quick mention here too. I recently learned that back in March, Google implemented a browse feature in Google News Archive that now makes it much easier to determine what issues of a specific paper have been digitized.
So far, I’ve made a list of 73 US Newspapers included in the Archive and the date ranges covered. More details over on the NCGenWeb blog, including a spreadsheet that lists them all. Keep in mind, this may not be exhaustive of the US papers as finding out what’s there is not the easiest task. I’m hopeful that Google continues to make improvements such as this!